If a set of grades on a statistics examination are approximately normally distributed with a mean of 74 and a standard deviation of 7.9, find a) the lowest passing grade of the lowest 10% of the students are given F's. b) the highest B if the top 5% of the students are given A's. c) the lowest B if the top 10% are given A's and the next 25% are given B's.

If a set of grades on a statistics examination are approximately normally distributed with a mean of 74 and a standard deviation of 7.9, find a) the lowest passing grade of the lowest 10% of the students are given F's. b) the highest B if the top 5% of the students are given A's. c) the lowest B if the top 10% are given A's and the next 25% are given B's.

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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