Kavita has been assigned the task of studying the average customer receipt for a branch of a major restaurant chain. The average receipt for the chain is $72.00 with a standard deviation of $11.00. The branch she is studying has an average bill of $67.00 for the last 40 receipts. She needs to know if this falls below the chain’s average. She will use a 1% level for significance because she does not want to inadvertently report the restaurants income as below average.

Upper-Tail Values
a
5%
2.5%
1%
Critical
z-values
1.65
1.96
2.58

Which choice depicts the result for Kavita’s hypothesis test?
She should reject H0: µ = 72 and accept Ha: µ < 72.
She should reject H0: µ = 72 and accept Ha: µ Not-equals 72.
She should accept H0: µ = 72 and reject Ha: µ Not-equals 72.
She should reject Ha: µ < 72 but cannot accept H0: µ = 72.