<PRE><B>Question 1058561</B>
I only see 4 teenagers in each group
:
We use the formulas for mean and variance
:
sample mean = (summation of x(i) from 1 to n) / n, where n is 4 teenagers in each group
sample variance = (summation of (x(i)-mean)^2) from 1 to n) / (n-1)
:
sample mean = 16.325 16.5 16.4 16.425 16.925
:
sample variance = 0.02917 0.08667 0.04667 0.02917 0.07583
:
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F statistic = max variance / sum of variances = 0.08667 / 0.26751 = 0.324
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:
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