A researcher is interested in whether students who play sports have a higher or lower body mass index (BMI) than students in the general population. The researcher is unsure whether playing sports will decrease body mass (due to more calories burned) or increase body mass (due to more muscle mass). This is a _____ -tailed test and the z_cv is _____. A)two; ±1.96 B)one; ±1.65 C)two; ±1.65 D)one; ±1.96

Question

Quizplus · Accepted Answer

This is a two-tailed test because the researcher is unsure whether playing sports will decrease or increase body mass. The critical value for a two-tailed test with a 95% confidence level is ±1.96.

A Researcher Is Interested in Whether Students Who Play Sports