1. Let X be a random variable with u = 79 and o = 7. The distribution is normal and the sample size is10.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.

The mean of the data is 79. The standard deviation of the data is 7

Answered: 1. Let X be a random variable with u =…

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.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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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.

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