Question

A ski company in Vail owns two ski shops, one on the west side and one on the east side of Vail. Ski hat sales data (in dollars) for a random sample of 5 Saturdays during the 2004 season showed the following results. Is there a significant difference in sales dollars of hats between the west side and east side stores at the 10 percent level of significance?

Saturday Sales Data ($) for Ski Hats
Saturday	East Side Shop	West Side Shop
1	524	524
2	432	702
3	617	610
4	584	571
5	499	549

Click here for the Excel Data File

(a)	Choose the appropriate hypotheses. Assume μd is the difference in average sales between the east side and west side stores.

	a. H0: μd = 0 versus H1: μd ≠ 0.
	b. H0: μd ≠ 0 versus H1: μd = 0.
	a b

(c-1)

Find the test statistic tcalc. (Round your answer to 2 decimal places. A negative value should be indicated by a minus sign.)

  

tcalc

Answer 1