The variance of X is 5 and the variance of Y is 8. What is the variance of X+Y?

A survey was conducted to find the average weight of students living in the dorms or a university. To help improve the accuracy of the study, an equal number of students were randomly selected from each dorm for the sample. This sample is an example of what?

Which of the following would be appropriate for a t-test?

Which of the following numbers (measures of kurtosis of a distribution) would represent a leptokurtic distribution?

What power is used in the formula for kurtosis?

P(X|Y)=.5 P(X)=.2 P(Y)=.4 What is P(X and Y),

Suppose A is always 3. Var(B)=4. What is Var(A+B)?

What is derived from the third moment of distribution?

Where would the outliers be if a distribution had a skewness of -1?

Say 2 events satisfy the following equation: P(A intersect B) = P(A) x P(B). We say that events A and B are __.

P(A)*P(B)=P(A and B) What can you conclude about A and B?