Suppose that for a particular study the expected value of a phenomenon is 0.00.

Question

Suppose that for a particular study the expected value of a phenomenon is 0.00. The study results in a reported 99% confidence interval of [0.05, 0.45].

What decision do you make based on the 99% confidence interval?

Fail to reject the null because this interval does not include negative values.

Fail to reject the null because the population mean is not within the confidence interval.

Reject the null because the population mean is not within the confidence interval.

Reject the null because this interval is unexpectedly small.

Fail to reject the null because this interval does not include negative values.

Fail to reject the null because the population mean is not within the confidence interval.

Reject the null because the population mean is not within the confidence interval.

Reject the null because this interval is unexpectedly small.

Explanation / Answer

Reject the null because the population mean is not within the confidence interval.

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