Question in statistics:In an intelligence test administered to 1,000students the average score was 42 andstandard deviation 24. Find(a) the number of students exceeding ascore of 50,(b) the number of students lying between 30and 54,(c) the value of score exceeded by the top100 students.

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Answered: Question in statistics: In an…

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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Suppose you are told that you scored two standard deviations below the mean on a measure where the mean was 90 and the standard deviation was8. What is your score?
In the School of Medicine at Florida State University, the mean IQ is 116 with a standard deviation of 14. Given this information, what IQ score would correspond to a z-score of -1.5? 123 118 104 95
In a certain test in English, the mean score of a group of 200 students was 56 and the standard deviation was 12. In a test in chemistry, the mean was 68 and the standard deviation was 8. If a student scored 65 in English and 75 in chemistry, in which test did she perform better?
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A person scores 81 on a test of verbal ability and 6.4 on a test of quantitative ability. For the verbal ability test, the mean for people in general is 50 and the standard deviation is 20. For the quantitative ability test, the mean for people in general is 0 and the standard deviation is 5. Which is this person’s stronger ability: verbal or quantitative? Explain your answer to a person who has never had a course in statistics.
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Question in statistics: In an intelligence test administered to 1,000 students the average score was 42 and standard deviation 24. Find (a) the number of students exceeding a Score of 50, (b) the number of students lying between 30 and 54, (c) the value of score exceeded by the top 100 students.