15 35 40 45 50 Frequency

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Sample maximum The distribution of scores on a
Statistics test for a particular class is skewed to the left.
The professor wants to predict the maximum score and
so wants to understand the distribution of the sample
maximum. She simulates the distribution of the maxi-
mum of the test for 30 different tests (with n = 5). The
histogram below shows a simulated sampling distribution
of the sample maximum from these tests.a) Would a Normal model be a useful model for this
sampling distribution? Explain.
b) The mean of this distribution is 46.3 and the SD is 3.5.
Would you expect about 95% of the samples to have
their maximums within 7 of 46.3? Why or why not?
15
35
40
45
50
Frequency
Transcribed Image Text:15 35 40 45 50 Frequency
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