Question: The marketing department also has historical information that indicates that the preferred screen ratios follow a normal distribution with a mean of 1.62:1 and a standard deviation of 0.08.

1. If a single person was randomly selected (not involved in the sample survey of 100 , but from the general population), what is the probability that it would show that a screen ratio of greater than 4: 3 was preferred?
2. If a sample of 5 were randomly selected (not involved in the sample survey of 100, but from the general population), what is the probability that the sample mean would show that a screen ratio of 4:3 or greater was preferred?

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