In a statistics exam an individuals score is normally distributed with a mean of 80 and a sample standard deviation of 8 points. Assume there are 30 individuals in the class. Calculate the probability the class average is less than 78. 58% 8.5% 21% 91.5% 42%
In a statistics exam an individuals score is normally distributed with a mean of 80 and a sample standard deviation of 8 points. Assume there are 30 individuals in the class. Calculate the probability the class average is less than 78. 58% 8.5% 21% 91.5% 42%
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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