Consider the Following Hypotheses Test $\mu$ $\ge$ 80
H_a $\mu$ < 80
a Sample of 121 Provided a Sample Mean

Essay

Consider the following hypotheses test.
H_o: $\mu$$\ge$ 80
H_a: $\mu$ < 80
A sample of 121 provided a sample mean of 77.3. The population standard deviation is known to be 16.5.
a.Compute the value of the test statistic.
b.Determine the p-value; and at 93.7% confidence, test the above hypotheses.
c.Using the critical value approach at 93.7% confidence, test the hypotheses.