Answer:
SD = 5.987, Var(X) = 35.85
Step-by-step explanation:
Apply the standard deviation formula, remembering that n represents the sample size. Then, just take the square of the standard deviation to obtain the variance.
Hope this helps!
this is your right answer. thanks!!
a-3
b-2/8 or 1/4 or 25%
10*0.11515