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If the intelligence quotients (IQ) of all human beings are assumed to be norma distributed with mean equal to 100, and standard deviation equal to 10, then wh of the following is TRUE? A. The distribution of the IQ of all human beings is positively skewed. B. At least 50% of all human beings have IQ less than or equal to 100. C. The probability of selecting a human being with an IQ equal to 100 is 0.5. D. The probability that the IQ of a randomly selected human being is inside the interval (90, 110) is approximately equal to 0.95.

If the intelligence quotients (IQ) of all human beings are assumed to be norma distributed with mean equal to 100, and standard deviation equal to 10, then wh of the following is TRUE? A. The distribution of the IQ of all human beings is positively skewed. B. At least 50% of all human beings have IQ less than or equal to 100. C. The probability of selecting a human being with an IQ equal to 100 is 0.5. D. The probability that the IQ of a randomly selected human being is inside the interval (90, 110) is approximately equal to 0.95.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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If the intelligence quotients (IQ) of all human beings are assumed to be normally distributed with mean equal to 100, and standard deviation equal to 10, then which of the following is TRUE? A. The distribution of the IQ of all human beings is positively skewed. B. At least 50% of all human beings have IQ less than or equal to 100. C. The probability of selecting a human being with an IQ equal to 100 is 0.5. D. The probability that the IQ of a randomly selected human being is inside the interval (90, 110) is approximately equal to 0.95.
Transcribed Image Text:If the intelligence quotients (IQ) of all human beings are assumed to be normally distributed with mean equal to 100, and standard deviation equal to 10, then which of the following is TRUE? A. The distribution of the IQ of all human beings is positively skewed. B. At least 50% of all human beings have IQ less than or equal to 100. C. The probability of selecting a human being with an IQ equal to 100 is 0.5. D. The probability that the IQ of a randomly selected human being is inside the interval (90, 110) is approximately equal to 0.95.
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