A large group of students took a statistics test. The mean score, from the scale of 100, was 74.5with a standard deviation of 7.5 The test scores have a bell-shaped distribution. 28If the minimum score for the letter grade B is79 what fraction of students received a grade of B or higher.a0.3082 b0.2907 c0.2743 d0.2587

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A large group of students took a statistics test. The mean score, from the scale of 100, was 74.5 with a standard deviation of 7.5 The test scores have a bell-shaped distribution. 29 What should the minimum score be set at so that a grade of A is given to the top 5% of test scores? a 87 b 88 c 89 d 90
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A large group of students took a statistics test.
The mean score, from the scale of 100, was	74.5	with a standard deviation of	7.5
The test scores have a bell-shaped distribution.

28	If the minimum score for the letter grade B is	79
	what fraction of students received a grade of B or higher.
a	0.3082
b	0.2907
c	0.2743
d	0.2587