Measuring the sum of the two numbers rolled
Suppose two dice are rolled. Let X be the random variable measuring the sum of the two numbers rolled.
(a) Find the probability mass function for X.
(b) Find the expected value E(X).
(c) Find the variance V(X).
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A computer manufacturer is introducing a new product specifically targeted at the home market and wishes to compare the effectiveness of three sales strategies: computer stores, home electronics stores, and department stores. Numbers of sales by 1
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You wish to test if there is a difference in the average time male and female students spend studying for a business statistics class. Construct the null hypothesis:
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