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Form A 5. (19 points) Let z be a random variable that represents the length of time it takes a student to write a

Form A 5. (19 points) Let z be a random variable that represents the length of time it takes a student to write a response paper. It was found that z has an approximately normal distribution with mean = 6.1 hours and standard deviation e 2.3 hours. (a) (10 points) What is the probability that it takes at least 5 hours for a randomly selected student to write a response paper? Answer: The probability is

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