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Find the p value

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Reference no: EM1319825

Question: A sample of 121 provided a sample mean of 77.3. The population standard deviation is known to be 16.5.

H0: μ ≥ 80
Ha: μ < 80

[A] Calculate the value of the test statistics.

[B] Find the p value and at 0.07 level of significance, test above hypothesis.

[C] Using the critical value approach at 0.07 level of significance, test hypothesis.

Reference no: EM1319825

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