The correlation between the heights ( measured in inches ) of brothers and the heights of their sister is r= 0.59  This tells us that ?

Q: For a certain class, the relationship between the amount of time spent studying and the test grade…

A: Given that,  The relationship between the amount of time spent studying and the test grade earned…

Q: A correlation coefficient of 0.961 would mean that the values of x increase as the values of y…

A: A positive means as that as x increases, y increases. Also a positive correlation means that as x…

Q: What is needed to investigate the strength of a relationship?

A: We have to write What is needed to investigate the strength of a relationship.

Q: The z value tells us the number of ____________ that a value of x is from the mean

A: The z value tells us the number of Standard Deviations that a value of x is from the mean

Q: ... Calculate the correlation. (Round to three decimal places as needed.) r=

A:

Q: what is the relative error of this data ? Please do in excel and show the formula you applied.

A: Hint: First I found standard error and then relative standard error  Solution: Standard error=…

Q: Which of the following best describes the picture?

A: Intro.: The given plot is interaction plot. The interaction between two factors defined as the…

Q: Note that the r you calculated is negative. How would we determine if this negative correlation is…

A: Given that  sample size (n)=18 Correlation coefficient (r)=-0.56 degree of freedom (df)=16 We will…

Q: The correlation between a serials fiber and potassium contents is r = 0.898. What fraction of the…

A: Given that  r = 0.898

Q: What score should Betty expect on average?

A: HERE  rolling A fair dice , so probability of each number (1,2,3,4,5,6) is 1/6

Q: What is the missing value for x on the diaaram below

A: Given: Find: x

Q: Kevin scored at the 60th percentile on a test given to 9780 students. How many students scored lower…

A: Given that the percentile of Kevin is 60.This means 60% of the students will have score lower than…

Q: he final grades for a statistics course are listed on the picture. answers must be in 4 decimal…

A: sample  x (x-x̄)^2 1 78 25.5025 2 75 4.2025 3 74 1.1025 4 84 122.1025 5 67…

Q: If the z-score for a motel is 0.7, what is the price of a single room at the motel (in dollars)?

A: The formula for z score is, z=x-μσn In the formula, x is the individual score, μ is the mean, σ is…

Q: What proportion of the variation in y can be explained by the variation in the values of x?

A: Here we have given the regression equation Y = 64.21X+ 44.09 and the correlation coefficient, r =…

Q: Graph the line that represents a proportional relationship between ddd and ttt with the property…

A:

Q: Several surveys in the United States and Europe have asked people to rate their happiness on a scale…

A: For those in one income group (making $25,000 to $55,000) it was found that their "happiness" was…

Q: The z score length of a carrot is 1.5, what is the length of this carrot?  what percentage of…

A: We have to find  the percentage of carrots....

Q: In 1996, the average price of a commodity was 20% more than that in 1995, but 20% less than that in…

A: Solution is given in the photo:

Q: A researcher would like to know if IQ scores are related to age. Using 10 high school students, he…

A: We have given that  A random sample of size 10 of high school students. Computed r is 0.58 and level…

Q: O B. Yes, the pulse rate of beats per minute appears to be an outlier because it is far away from…

A: Answer 77)  The expression Zα  denote the Z score with an area of αto its right.    p(z>zα)=α

Q: d) Theth percentile corresponds to this score, which means that 299 is (Round to five decimal places…

A: Now finding the answer for (d) Given that the best score is 299 now we have to find percentile…

Q: The table to the right gives the number of people by age group in a town of 100 000. (a) Add two…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: Given the following information, describe the variation. x3 1.5 0.5 0.3 5 10 30 50

A:

Q: The shape of the histogram (below) for the iPad 5 run time hours is approximately Is this what you…

A: From the histogram, the shape of the distribution is approximately symmetric (or bell shaped). For…

Q: The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to…

A: The given scatter plot is a linear and it's slope is negative. Given that, at zero miles the value…

Q: Qnó. In order to investigate material more accurately from dichotic listening task was ca positively…

A: Let us denote µ1 as the mean number of words recalled from the left ear and µ2 as the mean number of…

Q: The correlation between brain weight and body weight is r = 0.86. If brain weight had been measured…

A:

Q: Given the values in the table in the image attached, how do I find the value of r^2? Does the value…

A: 1) Coefficient of determination = r^2 =0.6923 2) The value suggest that the model is a somewhat…

Q: The correlation between X and Y is r = 0.35. %3D Based on this r value, is this a good equation to…

A:

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

A: Since Kevin scored 60th percentile, it means that Kevin's score is in the top 60 % of amongst the…

Q: A researcher reports an F ratio with df=2,27 from an independent research study. What was the total…

A: Solution: It is given that a researcher reports an F ratio with df = 2, 27 from an independent…

Q: Find the average rate of change of the function over the given interval. y = Vx, [2, 8] 3 10 O 7 O 2

A:

Q: For which of the x-values should you NOT attempt to estimate the y because of extrapolation? 20 60…

A: Given Information: From the given graph, the data points are, 9,1,41,3,55,4,69,5,75,5,83,6

Q: In 1997, the average price of a group of items was 25% more than in 1996 but 25% less than in 1995…

A:

Q: 2.2. Calculate the correlation of coefficient (r).

A: We have given the formula  r=(SXY/(√(SXX×SYY)))

Q: independent variable.

A: Measures of variability (sometimes called measures of dispersion) provide descriptive information…

Q: What about the p value and t values

A: From the given output, the sample size n is 15.

Q: Based on the scatter plot above, answer the following: 1. Can you describe the relationship between…

A: The relation between temperature and number of ice creams sold are positively correlated, hence as…

Q: What is the LOD if the deviation of the blank response    is 0.001 and has the equation of the line…

A: Aim : To estimate the LOD from the regression line Regression: The linear regression explains the…

Q: State whether the following statement is true or false: “The correlation between bushels per acre…

A:

Q: Almost there...round the percentages to three significant digits, and make sure to label the axes of…

A: From the provided data we compute the percentages as below:     Frequency Percentage Dog…

Q: What is the measure of ∠x in this diagram?

A:

Q: What is the relationship between R sqare and p-value?

A: Relationship between R square and p-value

Q: The proportion of variation explained is 0.3. If SSY is 20, what is SSY'?

A:

Q: Use the following scores to find the value of (Ex)² = %3D 4 3. 2.

A:

Q: Several surveys in the United States and Europe have asked people to rate their happiness on a scale…

A:

Q: Using the diagram above, what is the measure of KPN?

A: We have to use the relationship of angles and geometry.

Q: Fill out the table below and calculate the y statistic and degrees of freedom. Blackjack Preserve…

A: The Chi square χ2 test statistic formula is defined as below         χ2=∑Oi-EI2EI Where, Oi is the…