Which of the following is (are) true about the F distribution?
a. it has no negative values
b. it is positively skewed
c. there are a family of F curves uniquely determined by df(numerator) and df(denominator)
d. the mean of the F distribution equals 0
e. all of these
f. it has no negative values and it is positively skewed
g. it has no negative values, it is positively skewed and there are a family of F curves uniquely determined by df(numerator) and df(denominator)
G
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Cross-cultural research on semantic development shows that
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