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Consider the Following Hypotheses Test

Question 126

Short Answer

Consider the following hypotheses test.
Ho: μ ≥ 80 Ha: μ < 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.

Correct Answer:

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a. Z = -1.8
b. p-value = 0.035...

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