(Answered) The store manager of a piano distributor believes the

Statistics

The store manager of a piano distributor believes the demand for a particular type of piano may be related to the number of Yelp reviews about a demonstration video promoted by the company's marketing team during the preceding month. The store manager has collected the data shown in the following table

Yelp reviews Piano Sales

30 8

40 11

70 12

60 10

80 15

50 13

a. Graph these data to see whether a linear equation might describe the relationship between the reviews from Yelp and piano sales

b. Compute the SST, SSE, AND SSR. Find the least-squares regression line for these data.

c. Using the regression equation, predict piano sales if there were 40,000 reviews last month.

d. Test to see if there is a statistically significant relationship between sales and Yelp reviews at the 0.05 level of significance

e. Using computer software, find the least-squares regression line. Based on the F test, is there a statistically significant relationship between the demand for pianos and the number of Yelp reviews?

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