Question

For 45 cities in the U.S, we found a correlation of 0.86 between internet use and...

For 45 cities in the U.S, we found a correlation of 0.86 between internet use and online shopping. The regression equation predicting online shopping is ŷ =15+ 0.8 *Internet use a. Based on the correlation value, is the slope positive or negative? Why? b. Honolulu had an internet use of 91% and online shopping of 85%. Find its predicted online shopping based on the regression equation. c. Find the residual for Honolulu. Interpret the result

Homework Answers

Answer #1

The solution to this problem is given by

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
4) The regression equation predicting the average weight of a male age 18=24 (y) based on...
4) The regression equation predicting the average weight of a male age 18=24 (y) based on his height (x) is giben by y= 172.63+4.842x. Describe the correlation between height and weight based on the slop of the regression line. a) positive correlation since the magnitude of the slope is large relative to the intercept. b) negative correlation since the magnitude of the slope is small relative to the intercept. c) positive correlation since the slope is positive. d) positive correlation...
Colleges use SAT scores to predict how students will perform at the college level. Suppose the...
Colleges use SAT scores to predict how students will perform at the college level. Suppose the entering freshmen at a certain college have mean SAT Scores of 1200, with a standard deviation of 113. In the first semester these students attained a mean GPA of 2.57, with a standard deviation of 0.46. A scatterplot showed the association to be reasonably linear, and the correlation between SAT score and GPA was 0.39. a) Write the equation of the regression line. b)...
The OECD (Organization for Economic Cooperation and Development) consists of 20 advanced, industrialized countries. Based on...
The OECD (Organization for Economic Cooperation and Development) consists of 20 advanced, industrialized countries. Based on these 20 cases, the regression equation relating X = percent of gross domestic product devoted to social expenditure and Y = child poverty rate is E(Y) = 22 – 1.3X. The values of X range from 2% (United States) to 16% (Denmark). The values of Y range from 2.8% (Finland) to 21.9% (United States). The correlation between X and Y is –0.79. Interpret the...
Part C: Regression and Correlation Analysis Use the dependent variable (labeled Y) and the independent variables...
Part C: Regression and Correlation Analysis Use the dependent variable (labeled Y) and the independent variables (labeled X1, X2, and X3) in the data file. Use Excel to perform the regression and correlation analysis to answer the following. Generate a scatterplot for the specified dependent variable (Y) and the X1 independent variable, including the graph of the "best fit" line. Interpret. Determine the equation of the "best fit" line, which describes the relationship between the dependent variable and the selected...
The table below gives the number of hours spent unsupervised each day as well as the...
The table below gives the number of hours spent unsupervised each day as well as the overall grade averages for seven randomly selected middle school students. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the overall grade average for a middle school student based on the number of hours spent unsupervised each day. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would...
What is the relationship between the amount of time statistics students study per week and their...
What is the relationship between the amount of time statistics students study per week and their final exam scores? The results of the survey are shown below. Time 9 3 13 5 15 8 5 16 Score 80 75 91 75 93 78 82 91 Find the correlation coefficient: r=r=    Round to 2 decimal places. The null and alternative hypotheses for correlation are: H0:H0: ? μ r ρ  == 0 H1:H1: ? r ρ μ   ≠≠ 0 The p-value is:    (Round to four...
The table below gives the age and bone density for five randomly selected women. Using this...
The table below gives the age and bone density for five randomly selected women. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting a woman's bone density based on her age. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant. Age   Bone Density...
The table below gives the list price and the number of bids received for five randomly...
The table below gives the list price and the number of bids received for five randomly selected items sold through online auctions. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the number of bids an item will receive based on the list price. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make...
The table below gives the list price and the number of bids received for five randomly...
The table below gives the list price and the number of bids received for five randomly selected items sold through online auctions. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the number of bids an item will receive based on the list price. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make...
Chapter 13 #1 The table below gives the list price and the number of bids received...
Chapter 13 #1 The table below gives the list price and the number of bids received for five randomly selected items sold through online auctions. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the number of bids an item will receive based on the list price. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT