Question: 7.45 Let x be a continuous random variable that has a normal distribution with 48 and 8. Assuming nN .05,

7.45 Let x be a continuous random variable that has a normal distribution with 48 and 8. Assuming nN .05, find the probability that the sample mean, for a random sample of 16 taken from this population will be

a. between 49.6 and 52.2

b. more than 45.7

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