Using the data in Problem 4-10, test to see if there is a statistically significant relationship between sales and YouTube views at the 0.05 level of significance. Use the formulas in this chapter and Appendix D.

In Problem 4-10, The operations manager of a musical instrument distributor feels that demand for a particular type of guitar may be related to the number of YouTube views for a music video by the popular rock group Marble Pumpkins during the preceding month. The manager has collected the data shown in the following table:

YouTube Guitar

Views (1,000s) Sales

30 .......... 8

40 ..........11

70 ..........12

60 ..........10

80 ..........15

50 ..........13