Consider the following hypotheses: H0: = 120 HA: 120 The population is normally distributed

Question:

Consider the following hypotheses:
H0: µ = 120
HA: µ ≠ 120
The population is normally distributed with a population standard deviation of 46.
a. Use a 5% level of significance to determine the critical value(s) of the test.
b. What is the conclusion with = 132 and n = 50?
c. Use a 10% level of significance to determine the critical value(s) of the test.
d. What is the conclusion with = 108 and n = 50?