A population X is normally distributed with mean 71.5 and standard deviation 8.6. For each of the following values of x, find the corresponding z-number. Round off your answers to two decimal places. (a)    x = 90 (b)    x = 80 (c)    x = 75 (d)    x = 70 (e)    x = 60 (f)    x = 50

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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A population X is normally distributed with mean 71.5 and standard deviation 8.6. For each of the following values of x, find the corresponding z-number. Round off your answers to two decimal places.

(a)    x = 90


(b)    x = 80


(c)    x = 75


(d)    x = 70


(e)    x = 60


(f)    x = 50
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