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For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 175. The grading process of this year's exam has just begun. The mean score of the 40 exams graded so far is 526. What is the probability that a sample of 40 exams will have a mean score of 526 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 175. The grading process of this year's exam has just begun. The mean score of the 40 exams graded so far is 526. What is the probability that a sample of 40 exams will have a mean score of 526 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

MATLAB: An Introduction with Applications
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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For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 175. The grading process of this year's exam has just begun. The mean score of the 40 exams graded so far is 526. What is the probability that a sample of 40 exams will have a mean score of 526 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
Transcribed Image Text:For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 175. The grading process of this year's exam has just begun. The mean score of the 40 exams graded so far is 526. What is the probability that a sample of 40 exams will have a mean score of 526 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
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