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A researcher is evaluating whether an intervention affects college students’ study habits in a sample of...

A researcher is evaluating whether an intervention affects college students’ study habits in a sample of 81 college students. The researcher sets their alpha level at .05 and performs a two-tailed test. The researcher performs a ztest for this study and obtains a z = 1.98. Which sentence appropriately reports the interpretation of the results?

Math   Statistics-And-Probability   
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Answer #1

Null hypothesis: H0: There is no intervention affects on college students’ study habits.

Alternative hypothesis: H1: There is an intervention affects on college students’ study habits.

The z value of the test statistic appropriately reports the interpretation of the results. The z value of the test statistic is 1.98.

The critical z value at 0.05 level of significance from the standard normal table is . The value of the test statistic lie inside the critical region or t critical is less than test statistic therefore the null hypothesis is rejected and it can be concluded that there is sufficient evidence to support the cliam that an intervention affects on college students’ study habits.

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