Test the Claim About the Population Mean μ at the Level

Multiple Choice

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed. Claim: $\mu \leq 47 ; \alpha = 0.01 ; \sigma = 4.3$
Sample statistics: $\bar { x } = 48.8 , n = 40$

A) Reject $\mathrm { H } _ { 0 }$ There is enough evidence at the 1% level of significance to reject the claim.
B) Fail to reject $\mathrm { H } _ { 0 }$ There is enough evidence at the 1% level of significance to support the claim.
C) Not enough information to decide.