A researcher is interested in the amount of sleep an individual receives after consuming a sleeping aid (Melatonin, Valerian root, and Placebo). The researcher randomly selects individuals into either...

A researcher is interested in the amount of sleep an individual receives after consuming a sleeping aid (Melatonin, Valerian root, and Placebo). The researcher randomly selects individuals into either group. However, some individuals drop out of the study which results in unequal sample sizes.

a. Using symbols, state the hypotheses for a two-tailed test with α=0.05.
b. Locate the critical region. In doing so, determine the degrees of freedom values.

c. Calculate the F-ratio.
d. State the conclusion of these findings