Consider the following hypotheses test.
H0: ? ? 80
Ha: ? < 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 using ? = .063, test the above hypotheses.c.
Using the critical value approach and ? = .063, test the hypotheses.
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