Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 108. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 552.4. P(X > 552.4) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If 16 of the men are randomly selected, find the probability that their mean score is at least 552.4. P(M > 552.4) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If the random sample of 16 men does result in a mean score of 552.4, is there strong evidence to support the claim that the course is actually effective? O No. The probability indicates that is is possible by chance alone to randomly select a group of students with a mean as high as 552.4. O Yes. The probability indicates that is is (highly ?) unlikely that by chance, a randomly selected group of students would get a mean as high as 552.4. Submit Question
Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a standard deviation of 108. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the test has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 552.4. P(X > 552.4) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If 16 of the men are randomly selected, find the probability that their mean score is at least 552.4. P(M > 552.4) = Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted. If the random sample of 16 men does result in a mean score of 552.4, is there strong evidence to support the claim that the course is actually effective? O No. The probability indicates that is is possible by chance alone to randomly select a group of students with a mean as high as 552.4. O Yes. The probability indicates that is is (highly ?) unlikely that by chance, a randomly selected group of students would get a mean as high as 552.4. Submit Question
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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Transcribed Image Text:Scores for a common standardized college aptitude test are normally distributed with a mean of 493 and a
standard deviation of 108. Randomly selected men are given a Test Preparation Course before taking this test.
Assume, for sake of argument, that the test has no effect.
If 1 of the men is randomly selected, find the probability that his score is at least 552.4.
P(X > 552.4) =
Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or
Z-scores rounded to 3 decimal places are accepted.
If 16 of the men are randomly selected, find the probability that their mean score is at least 552.4.
P(M > 552.4) =
Enter your answer as a number accurate to 4 decimal places. NOTE: Answers obtained using exact z-scores or
Z-Scores rounded to 3 decimal places are accepted.
If the random sample of 16 men does result in a mean score of 552.4, is there strong evidence to support the
claim that the course is actually effective?
O No. The probability indicates that is is possible by chance alone to randomly select a group of students
with a mean as high as 552.4.
O Yes. The probability indicates that is is (highly ?) unlikely that by chance, a randomly selected group of
students would get a mean as high as 552.4.
Submit Question
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