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Question 1: Let X = the number of “heads” after 5 flips of a fair coin....

Question 1: Let X = the number of “heads” after 5 flips of a fair coin. What is P(X > 1)? Please round your answer to the nearest hundredth.

Question 2: The variance of X is 0.16. The variance of Y is 0.01. What is the variance of W = X - 3Y? Assume that X and Y are independent.

Question 3: Which of the following is not true about the t distribution? Please choose the best answer:

a) The total area under the curve is 1

b) All of the statements are correct

c) The distribution is symmetric

d) It is a bell-shaped distribution

e) the mean is 0

Math   Statistics-And-Probability   
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