An officer states that the average fine levied by the safety office against companies is at most $200. A company owner suspects it is higher. She samples 10 companies and finds that the average is $210. The standard deviation of the sample is 16. Test the claim that the average is higher than $200. At α = 0.05, which of the following is true?
a. The critical value is 1.761.
b. The critical value is 1.812.
c. Reject the null hypothesis.
d. There is not enough evidence to support the claim.