Question

In: Statistics and Probability

Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales...

Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales manager plans to air a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She plans to get the information for Saturday-Sunday digital camera sales at the various outlets and pair them with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there is any relationship between the number of times the advertisement was aired and digital camera sales. The pairings are as follows:

  Location of
  TV Station
Number of Airings ($ thousands)
  Providence 4 22
  Springfield 2 24
  New Haven 3 15
  Boston 3 12
  Hartford 6 10

a. Determine the correlation coefficient. (Round the final answer to 4 decimal places.)

Coefficient of correlation =

b. Determine the coefficient of determination. (Round the final answer to 3 decimal places.)   

Coefficient of determination =

c. Interpret these statistical measures. (Round the final answer to 1 decimal place.)

(select one)

The correlation coefficient indicates a very moderate negative correlation.

The correlation coefficient indicates a very strong negative correlation.  

The correlation coefficient indicates no relationship between X and Y.

d. The coefficient of determination indicates X accounts for about ____ percent of the variation in Y.

Solutions

Expert Solution

a.

r = -0.5845

b.

Coefficient of determination = 0.3416

c.

The correlation coefficient indicates a very moderate negative correlation.

d.

The coefficient of determination indicates X accounts for about 34.16 percent of the variation in Y.

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you satisfied with my answer then please please like this.
Thank You


Related Solutions

Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales...
Bi-lo Appliance Stores has outlets in several large metropolitan areas in New England. The general sales manager plans to air a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She plans to get the information for Saturday-Sunday digital camera sales at the various outlets and pair them with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there...
Nancy, Inc. has three stores located in three different areas. Random samples of the sales of...
Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal. At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores. Store 1 Store 2 Store 3 46 34 33 47 36 31 45 35 35 42 39 45
Nancy, Inc. has three stores located in three different areas. Random samples of the sales of...
Nancy, Inc. has three stores located in three different areas. Random samples of the sales of the three stores (in $1000) are shown below. Please note the sample sizes are not equal. Store 1 Store 2 Store 3 46 34 33 47 36 31 45 35 35 42 39 45 Compute the overall mean At a 5% level of significance, test to see if there is a significant difference in the average sales of the three stores.
A large firm made up of several companies has instituted a new quality-control inspection policy. Among...
A large firm made up of several companies has instituted a new quality-control inspection policy. Among 30 artisans sampled in Company A, only 5 objected to the new policy. Among 36 artisans sampled in Company B, 7 objected to the policy. a. Find the point estimate the true difference between the proportions voicing objection to the new policy for the two companies. b. Find the standard deviation of the point estimator in part a. c. Compute 95% confidence interval for...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT