MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Estimation
A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
Question

 Scores for men on the verbal portion of the SAT-I test are normally distributed with a mean of 509 and a standard deviation of 112. Note: Please round z-scores to 3 decimal places and give probabilities to at least 4 decimal places.
(a)  If 1 man is randomly selected, find the probability that his score is at least 586.5

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(b)  If 10 men are randomly selected, find the probability that their mean score is at least 586.5


10 randomly selected men were given a review course before taking the SAT test. If their mean score is 586.5, is there a strong evidence to support the claim that the course is actually effective?
(Enter YES or NO)

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