a) What is E[X]?
Round your answer to at least 3 decimal places.
b) What is Var[X]?
Round your answer to at least 3 decimal places.
4. Identify each of the following statements as either TRUE or FALSE.
a) (Click for List) True False In a geometric distribution, if the first success occurs on the Xth trial, then on the first X – 1 trials there must have been only a small number of successes.
b) (Click for List) True False If X is a geometric random variable, then the smallest value X can take on is 0.
c) (Click for List) True False The mean of X, a geometric random variable, is 1/p, where p is the probability of success on a single trial.
d) (Click for List) False True If the probability of success in a geometric distribution is greater than 0.5, then the variance is greater than the mean.
e) (Click for List) False True The geometric distribution is dependent upon two parameters.
5. Let X be a discrete random variable that follows a binomial distribution with n = 11 and probability of success p = 0.71.
What is P(X>7∣X≤9)?
Round your response to at least 3 decimal places.
6. According to the Statistics Canada website, the unemployment rate in Canada is approximately 8.0 % of the eligible workforce. If 25 members of the eligible workforce are randomly selected, what is the probability that exactly 4 of them are unemployed?
Round your response to 3 decimal places.
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