A researcher in 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

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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 two-tailed test because the researcher is interested in whether the BMI of students who play sports is different from the BMI of students in the general population, regardless of whether the difference is positive or negative. The zcv is ±1.96 because the researcher is using a 95% confidence level.

A Researcher in Interested in Whether Students Who Play Sports