1. Let X be a random variable with u = 79 and o = 7. The distribution is normal and the sample size is 10. Find the probability that the score selected randomly is less than 85. a.

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1. Let X be a random variable with u = 79 and o = 7. The distribution is normal and the sample size is
10.
a. Find the probability that the score selected randomly is less than 85.
b. Find the probability that the sample mean is below 79.8.
c. Find the probability that the mean of the sample is between 79 and 80.1.
Transcribed Image Text:1. Let X be a random variable with u = 79 and o = 7. The distribution is normal and the sample size is 10. a. Find the probability that the score selected randomly is less than 85. b. Find the probability that the sample mean is below 79.8. c. Find the probability that the mean of the sample is between 79 and 80.1.
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