A Recent Survey Indicated That the Average Amount Spent for Breakfast

Multiple Choice

A recent survey indicated that the average amount spent for breakfast by business managers was $7.58,
with a standard deviation of $0.42. It was felt that breakfasts on the West Coast were higher than $7.58. A
sample of 81 business managers on the West Coast had an average breakfast cost of $7.65.
-At $a = 0.05$ , what is the test value?

A) 1.96
B) 1.5
C) -1.5
D) 1.64