It is reportedt that the average or mean number of Facebook friends is 155. Suppose that when 55 randomly chosen Facebook users are polled regarding the number of their friends, the average number of their friends was reported to be x = 149 with standard deviation of s = 29.2. The value z corresponding to the observed sample mean and standard deviation is -1.52. n USE SALT What is the probability of observing a value of z greater than 1.52 or less than -1.52? (Round your answer to four decimal places.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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It is reportedt that the average or mean number of Facebook friends is 155. Suppose that when 55 randomly chosen Facebook users are polled regarding the number of their friends, the average
number of their friends was reported to be x
= 149 with a standard deviation of s
= 29.2. The value z corresponding to the observed sample mean and standard deviation is -1.52.
In USE SALT
What is the probability of observing a value of z greater than 1.52 or less than -1.52? (Round your answer to four decimal places.)
Transcribed Image Text:It is reportedt that the average or mean number of Facebook friends is 155. Suppose that when 55 randomly chosen Facebook users are polled regarding the number of their friends, the average number of their friends was reported to be x = 149 with a standard deviation of s = 29.2. The value z corresponding to the observed sample mean and standard deviation is -1.52. In USE SALT What is the probability of observing a value of z greater than 1.52 or less than -1.52? (Round your answer to four decimal places.)
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