No, because the value of a is not known. No, because it is no. known whether the

Question

No, because the value of a is not known. No, because it is no. known whether the data are normally distributed. No, because the entire data set is needed to do this test. Yes, Since 540,000 is not contained in the 98 percent confidence interval, the null hypothesis would be rejected in favor of the alternative, and it could be concluded that the mean family income is significantly different from $40,000 at the a = 0.02 level. Yes, since $40,000 is not contained in the 98 percent confidence interval, the null hypothesis would not be rejected and it could be concluded that the mean family income is not significantly different from $40,000 at the a = 0.02 level.

Explanation / Answer

the answer is D

because as you can see 40,000 is not in the interval so we reject Ho

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