We wish to test the null hypothesis that Population Mean 60. Assume that the pop

Question

We wish to test the null hypothesis that Population Mean 60.

Assume that the population is normally distributed and we know the population standard deviation.

To test this hypothesis, we use a 5% significance level.

We wish to test the null hypothesis that Population Mean s 60. Assume that the population is normally distributed and we know the population standard deviation. To test this hypothesis, we use a 5% significance level. For what range of test statistic values will we Reject the null hypothesis? Hint: When do you reject the Null Hypothesis or what is the rejection region? 1.645 >1.96

Explanation / Answer

The test is right tailed test, and since population standard deviation is known, the test is Z test

The critical value of Z at 5% level of significance( for right tailed test ) is 1.645. Since it is right tailed,

We reject null hypothesis if test statistic is > 1.645

Option 1) is correct

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