Question: A mathematician reported the results from a particular experiment to the researcher who conducted it. The report states that on one specific part of the

A mathematician reported the results from a particular experiment to the researcher who conducted it. The report states that on one specific part of the experiment, a statistical test result yielded a p-value of 0.21. Based on this p-value, what should the researcher conclude?

The test was not statistically significant because 2 0.21 = 0.42, which is less than 0.5.

The test was statistically significant because a p-value of 0.21 is greater than a significance level of 0.05.

The test was not statistically significant because if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 79% of the time.

The test was not statistically significant because if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time.

The test was statistically significant because p = 1 0.21 = 0.79, which is greater than a significance level of 0.05.

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