Question

3) You also have been asked to determine at both the 5% and 1% levels of significance whether the proportion of the purchasers of the unit at one very large store that purchases a certain lens at the time of the purchase of the body of the camera is different from 40%. You select a random sample of purchases of the unit from this store. The sample data concerning whether the purchases included the purchase of this lens is shown below. Answer the question posed above at each of the stated levels of significance based upon the sample data given in appendix two.

Appendix Two:

Purchase includes this lens? (Y = yes, N = no)

Y N Y Y N N N N N Y Y N N Y Y N N N Y N N N N Y Y Y N N Y N Y N Y Y N N Y N N Y Y N N N N N N N N N Y Y N Y Y Y Y N N Y Y Y Y N N N N N Y Y Y Y Y Y Y N N N N Y Y N Y N Y Y Y N N Y N Y Y N N N Y Y N N

Answer 1