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q18 Suppose X has a normal distribution with mean 80. (You don't know the standard deviation.) Then the probability that X is at least 75

q18 Suppose X has a normal distribution with mean 80. (You don't know the standard deviation.) Then the probability that X is at least 75 is one minus the probability that X is at most 75.

True

False

q19 Suppose X has a binomial distribution with n = 5. (You don't know the value of p.) Then the probability that X is at most 2 is one minus the probability that X is at least 3.

True

False

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