Assume that adults have IQ scores that are normally distributed with a mean of 96.8 and a standard deviation of 20.8. Find the probability that a randomly selected adult has an IQ greater than 126.5. (Hint: Drawa graph.)The probability that a randomly selected adult from this group has an IQ greater than 126.5 is(Round to four decimal places as needed.)

Answered: Image /qna-images/answer/1b0ad025-7ba8-4ac8-b203-8ddd4adc86ad.jpg

Answered: Assume that adults have IQ scores that…

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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Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. 0.6 The indicated IQ score, x, is (Round to one decimal place as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 95.7 and a standard deviation of 24.3. Find the probability that a randomly selected adult has an IQ greater than 121.9. (Hint: Draw a graph.) The probability that a randomly selected adult from this group has an IQ greater than 121.9 is (Round to four decimal places as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 96.3 and a standard deviation 17. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) (type an integer or decimal rounded to one decimal place as needed)
Assume that adults have IQ scores that are normally distributed with a mean of 97.4 and a standard deviation 21.2. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.)
Assume that adults have IQ scores that are normally distributed with a mean of 103.2 and a standard deviation 19.1. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) The first quartile is nothing. (Type an integer or decimal rounded to one decimal place as needed.)
Assume that adults have IQ scores that normally distributed with a mean of 99.2 and a standard deviation of 24.2. Find the first quartile Q1. Which is the IQ score separating the bottom 25% from the top 75%. ( hint . Draw a graph ). The first quartile is ____ ( type an integer or decimal rounded to one decimal place as needed .)
The distances golf balls travel under laboratory testing conditions are normally distributed. The mean is 313 yards. The probability the golf ball travels further than 322 yards is 0.13. Find the probability a randomly selected golf ball travels between 304 yards and 322 yards. Express the answer as a decimal value rounded to the nearest hundredth.
Assume that adults have IQ scores that are normally distributed with a mean of 95.7 and a standard deviation of 24.3. Find the probability that a randomly selected adult has an IQ greater than 121.9. (Hint: Draw a graph.) The probability that a randomly selected adult from this group has an IQ greater than 121.9 is (Round to four decimal places as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 103.5 and a standard deviation of 25. Find the probability that a randomly selected adult has an IQ greater than 137.0. (Hint: Draw a graph.) The probability that a randomly selected adult from this group has an IQ greater than 137.0 is . (Round to four decimal places as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 100.6 and a standard deviation of 19.5. Find the probability that a randomly selected adult has an IQ greater than 138.2. (Hint: Draw a graph.) The probability that a randomly selected adult from this group has an IQ greater than 138.2 is (Round to four decimal places as needed.)
The results of a certain medical test are normally distributed with a mean of 127 and a standard deviation of 12. (A reading above 146 is considered unhealthy.) Use the given table to find the percentage of people with readings above 133. Click the icon to view the table. EXIS The percentage of people with readings above 133 is. (Round the final answer to the nearest bundredth as needed. Round the z-score to the nearest tenth as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 103.1 and a standard deviation 20.6. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.)

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