Question

The mean height of adult males in the U.S is about 68.8" with a variance of 11.56". Suppose the mean height of a sample of 31 mentally disabled males was found to be 67.3". Researchers want to know if the height of mentally disabled males differs from the population. What can be concluded with α = 0.01?

Compute the appropriate test statistic(s) to make a decision about H₀.
critical value =  

If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[   ,   ]

e) Compute the corresponding effect size(s) and indicate magnitude(s).
d =   ;   ---Select--- na trivial effect small effect medium effect large effect

Answer 1

e) Effect size , medium effect