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 Zcv is _____. (Points : 2)
two; ±1.96
one; ±1.65
two; ±1.65
one; ±1.96

Question

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 Zcv is _____. (Points : 2)
       two; ±1.96
       one; ±1.65
       two; ±1.65
       one; ±1.96