Question: A researcher notes that the null hypothesis of = 6.0 points is not contained within the 95% confidence interval: 95% CI 2.0, 5.0. Based

A researcher notes that the null hypothesis of ยต = 6.0 points is not contained within the 95%

confidence interval: 95% CI 2.0, 5.0. Based on this result, which of the following is true?

a. The decision is to reject the null hypothesis: we estimate that points shifted between 1.0 to 4.0 points below the population mean.

b. The decision is to reject the null hypothesis: we estimate that points shifted between 2.0 to 5.0 points below the population mean.

c. The decision is to fail to reject the null hypothesis: we conclude that there is no effect in the population.

d. No decision could be made: it is not possible to infer significance and effect size from a confidence interval

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