The indicative of an inverse relationship between x and y is a negative correlation coefficient. When the correlation coefficient between two variables is negative, it means that as one variable (x) increases, the other variable (y) decreases. This is also known as an inverse relationship or a negative association.
A negative p-value for the correlation coefficient or a negative f statistic does not necessarily indicate an inverse relationship between x and y. A negative p-value for the correlation coefficient simply means that the observed correlation is unlikely to be due to chance, while a negative f statistic indicates that the model is not a good fit for the data.
If the correlation coefficient is negative, then it provides clear evidence of an inverse relationship between x and y.
A negative correlation coefficient is the best indicator of an inverse relationship between x and y, and it is important to interpret statistical measures carefully to determine the nature of the relationship between variables.
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a random sample of 100,000 credit sales in a department store showed an average sale of $87.25. from past data, it is known that the standard deviation of the population is $20.00. what is the 95% confidence interval of the population mean?
The 95% confidence interval of the population mean for the given sample is between $86.96 and $87.54.
To calculate the confidence interval, we need to use the formula:
CI = [tex]\bar{X}[/tex] ± Zα/2 * σ/√n
where,
[tex]\bar{X}[/tex] = sample mean = $87.25
Zα/2 = the Z-score for 95% confidence level = 1.96
σ = population standard deviation = $20.00
n = sample size = 100,000
Plugging these values in the formula, we get:
CI = 87.25 [tex]\pm[/tex] 1.96 * (20/√100,000)
CI = 87.25 [tex]\pm[/tex] 0.098
Therefore, the 95% confidence interval of the population mean is between $86.96 and $87.54. This means that we can be 95% confident that the true population mean lies within this interval.
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Lola has 4 1/2 cups of rice. She uses 3/4 of the rice to make sushi rolls for dinner. She uses the rest of the rice to make rice pudding for dessert. How much rice does Lola use for the rice pudding?
Lola has 9/8 cups of rice left to use for the rice pudding.
What is fraction?
A fraction is a mathematical term that represents a part of a whole or a ratio between two quantities.
To find out how much rice Lola uses for the rice pudding, we need to first determine how much rice she used for the sushi rolls.
Lola used 3/4 of the 4 1/2 cups of rice for the sushi rolls. To calculate this, we can multiply:
4 1/2 cups x 3/4 = (9/2) x (3/4) = 27/8 cups
So Lola used 27/8 cups of rice for the sushi rolls.
To find out how much rice Lola has left for the rice pudding, we need to subtract the amount she used for the sushi rolls from the original amount of rice she had:
4 1/2 cups - 27/8 cups = 36/8 cups - 27/8 cups = 9/8 cups
Therefore, Lola has 9/8 cups of rice left to use for the rice pudding.
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explain clearly why we cannot have the combination of a yes to practical significance, and a no to statistical significance.
It is not possible for a study to have practical significance without statistical significance because statistical significance provides evidence that the observed effect is unlikely to have occurred by chance.
The Practical significance and statistical significance are two different concepts that are often used in hypothesis testing.
The Statistical significance refers to the probability that the observed results of a study occurred by chance, given a particular level of significance or alpha.
The Practical significance refers to whether the observed effect size is large enough to be meaningful in a real-world context.
It is possible for a study to have statistical significance without practical significance. For example, a study may find a statistically significant difference between two groups, but the difference may be so small that it is not meaningful in practice.
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1. Find the length of the missing side:
8m
7
12m
2. Is the triangle a right triangle?
11
9
a student's grades in a history class are shown in the histogram. which statement best describes the spread and distribution of the data? the data is almost symmetric, with a maximum range of 59. this might be because the topic is easily understood by the students. the data is skewed, with a maximum range of 59. this might be because the teacher offered extra credit, and most of the students did that to increase their grades above 70. the data is bimodal, with a maximum range of 59. this might be because students either did not understand and earned less than 51, or they knew the topic well and earned higher than 90. the data is symmetric, with a maximum range of 59. this might be because the topic was very difficult for the students and most of them earned lower grades.
The data is bimodal, with a maximum range of 59.
This might be because students either did not understand and earned less than 51, or they knew the topic well and earned higher than 90.
Using the following terms: a student's grades in a history class are shown in the histogram.
Which statement best describes the spread and distribution of the data:
The data is almost symmetric, with a maximum range of 59.
This might be because the topic is easily understood by the students.
The data is skewed, with a maximum range of 59.
This might be because the teacher offered extra credit, and most of the students did that to increase their grades above 70.
The data is bimodal, with a maximum range of 59.
This might be because students either did not understand and earned less than 51, or they knew the topic well and earned higher than 90.
The data is symmetric, with a maximum range of 59.
This might be because the topic was very difficult for the students, and most of them earned lower grades.
The correct answer to this question is the data is skewed, with a maximum range of 59.
This might be because the teacher offered extra credit, and most of the students did that to increase their grades above 70.
Skewness refers to a condition in which the data is not symmetrical.
When data is skewed, it indicates that the majority of the data lies on one side of the graph, while the other side is either empty or has a small amount of data.
A histogram with a peak and a long tail is referred to as a positively skewed histogram, indicating that most of the data is on the left side of the graph.
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Geometry Homework
Please help
The measure of angle x is 90°
How to find the measure of angle x?In a semicircle, an angle that has its vertex at the center of the circle will always be a right angle, which is 90 degrees.
This is because a semicircle is defined as half of a full circle, and the diameter of a circle forms a right angle with any chord that it intersects.
Therefore, any angle in a semicircle that has its vertex at the center of the circle will be 90 degrees.
Thus, the measure of angle x is 90°.
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what is the median and range of the data
The median and the range of the given data above would be =5 and 11 respectively.
How to calculate the median and range of a given data?The range of a data set can be calculated by the subtraction of the largest variable form the smallest variable of a data set.
That is;
Data set = 1,1,1,1,2,2,2,5,6,6,6,8,9,10,12
largest variable = 12
smallest variable = 1
range = 12-1 = 11
The median of the data set is the figure that fall at the middle of the data set after being arranged either in ascending or descending order.
The median of the data = 5
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Make p the subject of m=3n+2p
Answer:
[tex]n = \frac{m - 2p}{3} \\ \\ p = \frac{m - 3n}{2} [/tex]
Step-by-step explanation:
[tex]1. \: m - 2p = 3n \\ 2. \: \frac{m - 2p}{3} \\ 3. \: n = m - 2p \\ \\ 1. \: m - 3n = 2p \\ 2. \: \frac{m - 3n}{2} = p \\ 3. \: p = \frac{m - 3n}{2} [/tex]
Paula invited some friends to dinner, and she plans to make fajitas. At the grocery store, she spends $2.56 on red bell peppers and $1.92 on green bell peppers. If both types of bell peppers cost $1.60 per pound, how many total pounds of bell peppers does she buy?
We must first determine the total price of the bell peppers in order to determine the number of pounds Paula purchased. Paula bought a total of [tex]2.8[/tex] pounds of bell peppers.
What is the total cost?To determine the total pounds of bell peppers Paula bought, we first need to find the total cost of the bell peppers.
The cost of the red bell peppers is $2.56 and the cost of the green bell peppers is $ [tex]1.92[/tex] , so the total cost of both types of bell peppers is:
$ [tex]2.56[/tex] + $ [tex]1.92 =[/tex]$ [tex]4.48[/tex]
Since both types of bell peppers cost $[tex]1.60[/tex] per pound, we can use this information to find the total weight of the bell peppers.
Let x be the total weight of the bell peppers. Then we can set up the following equation:
$ [tex]1.60\times =[/tex]$[tex]4.48[/tex]
To solve for x, we divide both sides by $[tex]1.60[/tex]:
[tex]x = $4.48 / $1.60[/tex]
[tex]x = 2.8[/tex]
Therefore, Paula bought a total of [tex]2.8[/tex] pounds of bell peppers.
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Answer: 2.8 pounds of bell pepper bought by Paula
Step-by-step explanation:
Given that :
At the grocery store, the amount spent by Paula :
The amount spent on red bell pepper = $2.56
The amount spent on green bell pepper = $1.92
the total amount spent = $2.56+$1.92 = $4.48
If both the bell peppers are at $1.60 per pound, then the total pounds of bell pepper Paula bought
= $4.48/ $1.60
= 2.8 pounds
Solution:
Therefore the number of pounds of bell pepper bought by Paula is 2.8.
What is the Coefficient of x4 in expansion of (2+x)5
Answer:
10
Step-by-step explanation:
rewrite as (x+2)⁵
use the binomial formula:
(a+b)⁵ = a⁵ + 5a⁴b + 10a³b² + 10a²b³ + 5ab⁴ + b⁵
a = x, b = 2
The problem is only asking for the coefficient of the x⁴ expression, so the answer is:
5a⁴b = 5(x)⁴(2) = 10x⁴
Help please !!!!!!!!!!
The value of n for each of the values in the problem have been shown below.
How do you simplify exponents?When multiplying exponential expressions with the same base, you can add the exponents. For example: a^m * a^n = a^(m+n).
When dividing exponential expressions with the same base, you can subtract the exponents. For example: a^m / a^n = a^(m-n).
An exponential expression with a fractional exponent can be rewritten as a radical expression. For example: a^(1/2) = √a.
We know that;
a^6/2 = a^n
n = 3
a^9/2 = a^n
n = 9/2
a^3(7/2) = a^n
n = 21/2
a^3/2 = a^n
n = 3/2
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Question 5(Multiple Choice Worth 2 points)
(Factoring Algebraic Expressions MC)
Rewrite x^² - 2x³y³ using a common factor.
Ox²y(xy-2xy²)
Ox²²(x²-2xy)
O 2xy²(x²-x²y)
O 2xy(x³y-x²y)
[tex]x^4y^2-2x^3y^3\\\\x^2y^2(x^2-2xy)[/tex]
Answer is the second one.
Write the equation of the line of reflection between the points (-9, 12) and (17, -78) in point-slope form
The equation of the line of reflection is y = (−13 / 45)x − (1376 / 45) in point-slope form.
EquationsTo find the equation of the line of reflection between the points (-9, 12) and (17, -78), we first need to find the midpoint of the line segment joining these two points, which will lie on the line of reflection. The midpoint formula is:
[(x₁ + x₂) / 2, (y₁ + y₂) / 2]
Using the coordinates of the two given points, we get:
[(−9 + 17) / 2, (12 − 78) / 2] = [4, −33]
So, the midpoint is (4, −33).
Next, we need to find the slope of the line of reflection. This is equal to the negative reciprocal of the slope of the line passing through the two given points, since the line of reflection is perpendicular to this line. The slope of the line passing through the two given points is
m = (y₂ − y₁) / (x₂ − x₁) = (−78 − 12) / (17 − (−9)) = −90 / 26 = −45 / 13
So, the slope of the line of reflection is:
m' = −1 / m = −13 / 45
Finally, we can use the point-slope form of the equation of a line, with the midpoint we found as the point and the slope we calculated as the slope which is
y − (−33) = (−13 / 45)(x − 4)
y + 33 = (−13 / 45)x + (52 / 45)
or
y = (−13 / 45)x − (1376 / 45)
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Express as a trinomial (2x+3)(3x+6)
Answer:
[tex]6 {x}^{2} + 21x + 18 [/tex]
Step-by-step explanation:
[tex](2x + 3)(3x + 6)[/tex]
[tex]6 {x}^{2} + 12x + 9x + 18[/tex]
[tex]6 {x}^{2} + 21x + 18[/tex]
Please help me with this question TT. I really don’t understand…
Answer:
Step-by-step explanation:
i)
(x+1)(7-x) = (x+1)(-x+7) = -x² + 6x + 7
standard form: y = -x² + 6x + 7
for the vertex form you have to find the coordinates of the vertex (h, k):
a = -1, b = 6, c = 7
h = -b/2a = -6/2(-1) = 3
k = ah² + bh + c = -1(3)² + 6(3) + 7 = 16
vertex form: y = a(x-h) + k
y = -1(x - 3) + 16
ii)
Dimensions of the largest rectangle that can be made are:
Plug in maximum value of x, x = 3
x + 1 = 3 + 1 = 4
7 - x = 7 - 3 = 4
largest rectangle is 4 x 4 = 16
<7+m<6=200 appropriate theorem
The appropriate theorem used to solve this inequality is the subtraction property of inequalities, which states that if a < b, then a - c < b - c for any real number c. In this case, we subtracted 7 from both sides of the inequality to isolate m.
What is the inequalities theorem?It says [tex]"7+m < 6=200"[/tex] which has an equal sign in between 6 and 200, which does not make sense. I will assume that the inequality you meant to provide is:
[tex]7+m < 6[/tex]
To solve this inequality, we want to isolate m on one side of the inequality. We can do this by subtracting 7 from both sides:
[tex]7 + m - 7 < 6 - 7[/tex]
Simplifying the left-hand side and the right-hand side, we get:
[tex]m < -1[/tex]
Therefore, the solution to the inequality [tex]7+m < 6[/tex] is:
m < -1
We can verify this solution by plugging in a value of m that is less than -1, such as -2, into the original inequality:
[tex]7 + (-2) < 6[/tex]
Simplifying the left-hand side, we get:
[tex]5 < 6[/tex]
This is true, so the solution m < -1 is valid.
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The given question is incomplete. Complete question is given below:
Solve the inequality 7+m<6=200 using the appropriate theorem.
Given rectangle JKLM below, JN = 44.
If MN = -2x + 2, solve for x.
The solution for x is -21 when rectangle JKLM below, JN = 44.
If MN = -2x + 2,
What is the rectangle?
A rectangle is a geometric shape with four sides and four right angles. It is a quadrilateral in which opposite sides are equal in length and parallel to each other, and adjacent sides are perpendicular to each other.
To solve for x, we can use the given information that JN = 44 and MN = -2x + 2 in the rectangle JKLM.
Since JN is a side of the rectangle and is equal to 44, and MN is also a side of the rectangle and is equal to -2x + 2, we can set up the equation:
JN = MN
44 = -2x + 2
Now we can solve for x:
Add 2x to both sides:
44 + 2x = 2
Subtract 2 from both sides:
44 + 2x - 2 = 0
42 + 2x = 0
Subtract 42 from both sides:
42 + 2x - 42 = 0 - 42
2x = -42
Finally, divide both sides by 2 to isolate x:
2x / 2 = -42 / 2
x = -21
Hence, the solution for x is -21.
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(2x+3)(3x+6) as a trinomiol
Answer: [tex]6x^{2}[/tex] + 24x + 18
Step-by-step explanation: To multiply these two terms you multiply each individual term in the left parenthesis by each individual term in the right parenthesis.
a continuous random variable x has the following sample frequency distribution: value frequency 0 73 between 0 and 70 37 between 70 and 200 182 between 200 and 500 232 what is the mean from this sample?
As per the mentioned informations and values provided, the mean from this sample frequency distribution is calculated to be approximately 160.50.
To find the mean from the given sample frequency distribution, we need to first calculate the midpoint for each class interval, then multiply it by the corresponding frequency, sum all of these products, and finally divide by the total frequency.
Using the formula: mean = (sum of midpoint x frequency) / (sum of frequency)
Midpoint for the first interval = (0 + 70) / 2 = 35
Midpoint for the second interval = (70 + 200) / 2 = 135
Midpoint for the third interval = (200 + 500) / 2 = 350
Now we can calculate the sum of midpoint x frequency:
35 x 73 + 135 x 37 + 350 x 182 + 232 x 500 = 84,166
The total frequency is the sum of all frequencies: 73 + 37 + 182 + 232 = 524
Finally, we can calculate the mean:
mean = (sum of midpoint x frequency) / (sum of frequency) = 84,166 / 524 ≈ 160.50
Therefore, the mean from this sample frequency distribution is approximately 160.50.
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a probability distribution is: group of answer choices the average value that a random variable is expected to assume over a large number of trials. a summary of data into classes along with the number of occurrences in each class. a listing of all possible outcomes along with their likelihood of occurrence. a listing of the successes and failures from a given experiment.
A probability distribution is a listing of all possible outcomes along with their likelihood of occurrence.
It is a way of describing the likelihood of different outcomes in a statistical experiment or random event. It is used to calculate the probability of different events or outcomes in situations where there is uncertainty or variability. There are two types of probability distributions: discrete and continuous.
Discrete probability distributions are used when the possible outcomes of a statistical experiment are discrete or countable, such as the number of heads obtained in flipping a coin. Continuous probability distributions are used when the possible outcomes of a statistical experiment are continuous or uncountable, such as the height of people in a population.
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If something is $125 with a sale for $87.50, what percent off was the sale?
well, the amount off from the original 125 is just 125 - 87.50 = 37.50.
now, if we take 125(origin amount) as the 100%, what's 37.50 off of it as a percentage?
[tex]\begin{array}{ccll} Amount&\%\\ \cline{1-2} 125 & 100\\ 37.50& x \end{array} \implies \cfrac{125}{37.50}~~=~~\cfrac{100}{x} \\\\\\ 125x=3750\implies x=\cfrac{3750}{125}\implies x=30[/tex]
To determine what percent off the sale for something was, we need to use the formula for percent off calculation.
What is percent off? The percent off is used to refer to the reduction in price or value of something. The percent off calculation is used to determine the amount of discount in percentage of the original price or value.
What is the formula for percent off calculation? The formula for percent off calculation is as follows:
percent off = (discount / original price) x 100, where,discount = original price - sale price
original price = $125 sale price = $87.50
Substitute the given values into the formula and simplify.
percent off = (discount / original price) x 100percent off =
(($125 - $87.50) / $125) x 100percent off
(37.50 / 125) x 100percent off
⇒ 0.3 x 100percent off = 30%
Therefore, the percent off the sale was 30%.
hey guyz what is 65 x 340 +3000
i will giv branlist
Answer:
217,100
Step-by-step explanation:
in this equation first you would want to add together 3000 + 340 which is 3340 then multiply that by 65. Remember to do addition and subtraction steps in multi-step equations first
Help me solve this please.
distributive property
7(r+3)+2(r-2)?
1. 7r+3+2r-2
2. 7r+21+2r-4
3. 7r+21-2r-2
4. 7r+3+2r-4
Step-by-step explanation:
ans is 2 nd option
first bracket multiply with 7 and second multiply with 2 multiply the sign also carefully.
explain the reasons that someone would create either a bar chart or a histogram in order to explore a single column of data
A bar chart or a histogram are visual representations of data that can be used to explore a single column of data.
A bar chart is used to compare different categories of data, and a histogram is used to measure the frequency of data within a given range. Bar charts allow a user to compare the differences between the categories of data, while histograms provide a better indication of how the data is distributed within the range.
Both bar charts and histograms are useful for identifying patterns, outliers, and trends in the data. By using a bar chart or a histogram, a user can quickly and easily identify where the data is concentrated, as well as identify any outliers or trends in the data.
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Bridget is creating a new board game called Tri-Tri-Again to enter a contest at the local game shop. She is making the game board in the shape of a triangle. The base of the triangle is 1
1
4
feet long, and its height is 2
1
2
feet.
What is the area of the game board?
Write your answer as a whole number, proper fraction, or mixed number.
The area of the Tri-Tri-Again board game is 3 1/8 square feet.
To calculate the area of a triangle, we need to know the length of its base and its height. In this case, Bridget's Tri-Tri-Again board game is in the shape of a triangle with a base of 1 1/4 feet and a height of 2 1/2 feet. To find the area of the triangle, we can use the formula for the area of a triangle, which is 1/2 x base x height.
We first convert the mixed numbers to improper fractions. The base is 5/4 feet and the height is 5/2 feet. We can then substitute these values into the formula to get:
Area of triangle = 1/2 x 5/4 feet x 5/2 feet
Area of triangle = 25/8 square feet
We can simplify the answer by dividing the numerator and denominator by the greatest common factor of 25 and 8, which is 1. This gives us:
Area of triangle = 25/8 square feet
Area of triangle = 3 1/8 square feet
Therefore, the area of the Tri-Tri-Again board game is 3 1/8 square feet.
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a gift card for a coffee shop has a starting balance of $50. you buy a coffee everyday for $3.35 and some days you buy a bagel with cream cheese for $2.95. After 10 days, the remaining balance is $1.75. How many bagels did you buy
Answer:
5
Step-by-step explanation:
Cost of bagels = 50 - 1.75 - 33.5 = 14.75
No. of bagels = 14.75/2.95 = 5
Answer:
You bought 5 bagels.
Step-by-step explanation:
Since you buy a coffee every day and it says "after 10 days" you multiply the price of the coffee by 10: $3.35 * 10 = $33.5
It also says that the remaining balance on the gift card is $1.75. So you need to subtract that from the original balance, 50: $50- $1.75 = $48.25 - this is the amount of money you spent.
Next, you subtract the price of all the coffees you bought from the amount of total money you spent over the course of 10 days. $48.25 - $33.5 = $14.75
This remaining money is for the bagels that you bought on some days. The last step should be to divide $14.75 by the price of one single bagel:
$14.75 / 2.95 = 5
You bought 5 bagels.
Hope this helps!!!!
13.
24 ft
6 ft
9 ft
composite figures
17 ft
14.
By the definition of a parallelogram, ab∥dc. ad is a transversal between these sides, so ∠a and ∠d are angles. because ab and dc are , the same-side interior angles must be by the same-side interior angles theorem. therefore, ∠a and ∠d are supplementary.
In a parallelogram, The statement "angle A and angle D are supplementary" is not correct.
The same-side interior angles theorem states that if a transversal intersects two parallel lines, then the same-side interior angles are supplementary. However, in this case, we are dealing with a parallelogram, which has two pairs of parallel sides.
When we say that "ab||dc", we are stating that side AB is parallel to side DC. We cannot assume that side AD is a transversal between these two sides, as it could intersect the sides at some other angle. Therefore, we cannot conclude that angle A and angle D are angles.
However, we do know that opposite angles in a parallelogram are congruent. Therefore, we can conclude that angle A is congruent to angle C, and angle B is congruent to angle D.
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Can someone help me, pls
Answer is attached
hope it helps you ⬆️