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Heights of 9 year olds closely follow a normal distribution with mean 50 inches and standard deviation 6 inches. (a) The height requirement for the

Heights of 9 year olds closely follow a normal distribution with mean 50 inches and standard deviation 6 inches. (a) The height requirement for the New Mexico Rattler at Cliff's Amusement Park is 48 inches. What percentage of 9 year olds cannot go on this ride? (b) Suppose that we pick two 9 year olds at random (independently). What is the probability that at least one of them can ride the New Mexico Rattler

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