# Question: Consider the following data on y number of songs

Consider the following data on y = number of songs stored on an MP3 player and x = number of months the user has owned the MP3 player for a sample of 15 owners of MP3 players.

a. Construct a scatterplot of the data. Does the relationship between x and y look approximately linear?

b. What is the equation of the estimated regression line?

c. Do you think that the assumptions of the simple linear regression model are reasonable? Justify your answer using appropriate graphs.

d. Is the simple linear regression model useful for describing the relationship between x and y? Test the relevant hypotheses using a significance level of .05.

a. Construct a scatterplot of the data. Does the relationship between x and y look approximately linear?

b. What is the equation of the estimated regression line?

c. Do you think that the assumptions of the simple linear regression model are reasonable? Justify your answer using appropriate graphs.

d. Is the simple linear regression model useful for describing the relationship between x and y? Test the relevant hypotheses using a significance level of .05.

## Relevant Questions

Let x be the size of a house (in square feet) and y be the amount of natural gas used (therms) during a specified period. Suppose that for a particular community, x and y are related according to the simple linear regression ...Refer back to Example 13. 3 in which the simple linear regression model was fit to data on x = proportion who judged candidate A as more competent and y 5 vote difference proportion. For the purpose of estimating b as ...Do taller adults make more money? The authors of the paper “Stature and Status: Height, Ability, and Labor Market Outcomes” (Journal of Political Economics [2008]: 499–532) investigated the association between height ...Sea bream are one type of fish that are often raised in large fish farming enterprises. These fish are usually fed a diet consisting primarily of fish meal. The authors of the paper “Growth and Economic Profit of Gilthead ...Example 13. 3 gave data on x = proportion who judged candidate A as more competent and y = vote difference proportion. Calculate a 95% confidence interval for the mean vote-difference proportion for congressional races where ...Post your question