38. The average IQ score for adults is 100 with a standard deviation of 15.Assume that the distribution of IQ scores is approximately normal.a. Find the percentage of adults who have an IQ score less than 90.b. Find the percentage of adults who have an IQ score which exceeds themean by at least 15 points.e. Find the percentage of adults who have an IQ score between 100 and 120.d. Find the percentage of adults who have an IQ score less than 55 ormore than 145.

Mean=M=100, Standard deviation=S=15 Note: According to bartelby question answer guidelines an…

Answered: 38. The average IQ score for adults is…

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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4. Given 2 sets of data, A and B. Set A has a mean of 10 and standard deviation of 7.416 while Set B has a mean of 3.87 and a standard deviation of 2.01. Which of the following is true regarding these two sets of data? CHOICES A. Their CVs are =. B. Set A is more variable than Set B. C. Set A is less variable than Set B. D. Set A = Set B in terms of variability.
2.5
A variable is normally distributed with a mean of 15 and a standard deviation of 4. a. Find the percentage of all possible values of the variable that lie between 10 and 23. b. Find the percentage of all possible values of the variable that are at least 7. c. Find the percentage of all possible values of the variable that are at most 8.
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Please answer and explain #7
Kindly answer the three literals in the image
14. The range is defined as the: a. variability of the data with reference to extreme scores. b. the variability of the data with reference to the mean. c. variability of the data in terms of how many subjects achieved each value of the variable. d. SS/n
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31. A class of 20 students took a test. The standard deviation of the test scores is 0. Which of the following statements must be true about the test scores? A. All of the test scores are zero. B. All of the test scores are positive. C. Half of the test scores are positive and half of the test scores are negative. D. All of the test scores are the same.

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