A Consumer Advocate Decided to Investigate the Average Wait Time

Multiple Choice

A consumer advocate decided to investigate the average wait time for a table for one at two local restaurants.Eighteen customers were sent to each restaurant at the same randomly selected times and the times they waited for a table were recorded in minutes.The following sample data was obtained.
Find a 95% confidence interval for the difference,
-
,between the mean wait time at Restaurant A and the mean wait time at Restaurant B.

A) (-8.3,1.86)
B) (-1.86,8.3)
C) (-8.3,-1.86)
D) (-13.5,-10.28)
E) (10.28,13.5)