Test the claim about the population​ mean, muμ​, at the given level of significance using the given sample statistics. ​Claim: muμequals=40​; alphaαequals=0.01​; sigmaσequals=3.93. Sample​ statistics: x overbarxequals=38.8​, nequals=72 Question content area bottom Part 1
Identify the null and alternative hypotheses. Choose the correct answer below

Calculate the standardized test statistic.

Determine the critical​ value(s). Select the correct choice below and fill in the answer box to complete your choice.

Determine the outcome and conclusion of the test. Choose the correct answer below.

A.
RejectReject Upper H 0H0. At the 11​% significance​ level, there isis enough evidence to support the claim.
B.
Fail to rejectFail to reject Upper H 0H0. At the 11​% significance​ level, there is notis not enough evidence to support the claim.
C.
Fail to rejectFail to reject Upper H 0H0. At the 11​% significance​ level, there is notis not enough evidence to reject the claim.
D.
RejectReject Upper H 0H0. At the 11​% significance​ level, there isis enough evidence to reject the claim.