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h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number?

h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number?

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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question h and expected number

 

uppose a Obabinty eight e. Suppose a random sample of 20 U.S. adults is taken. What is the probability that fewer than five adults invested in mutual funds? f. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly one adult invested in mutual funds? g. Suppose a random sample of 20 U.S. adults is taken. What is the probability that 11 or more adults invested in mutual funds? h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number? Appendix A Statistical Tables *(Round your answers to 3 decimal places when calculating using Table A.2, e.g. 0.215.) *(Round your answer to 1 decimal places, e.g. 2.1.) **(Round your answer to 0 decimal places, e.g. 25.) * a. P(x = 8) = b. P(x> 10) = c. Expected Value = d. P(x = 8) = %3D е. Р(х < 5) - f. P(x = 1) = %3D g. P(x > 11) = *** h. x = Expected Number = µ = *** %3D
Transcribed Image Text:uppose a Obabinty eight e. Suppose a random sample of 20 U.S. adults is taken. What is the probability that fewer than five adults invested in mutual funds? f. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly one adult invested in mutual funds? g. Suppose a random sample of 20 U.S. adults is taken. What is the probability that 11 or more adults invested in mutual funds? h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number? Appendix A Statistical Tables *(Round your answers to 3 decimal places when calculating using Table A.2, e.g. 0.215.) *(Round your answer to 1 decimal places, e.g. 2.1.) **(Round your answer to 0 decimal places, e.g. 25.) * a. P(x = 8) = b. P(x> 10) = c. Expected Value = d. P(x = 8) = %3D е. Р(х < 5) - f. P(x = 1) = %3D g. P(x > 11) = *** h. x = Expected Number = µ = *** %3D
In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that 20% of all stock investors are retired people. In addition, 40% of all U.S. adults invest in mutual funds. Suppose a random sample of 25 stock investors is taken. a. What is the probability that exactly eight are retired people? b. What is the probability that 10 or more are retired people? c. How many retired people would you expect to find in a random sample of 25 stock investors? d. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly eight adults invested in mutual funds? e. Suppose a random sample of 20 U.S. adults is taken. What is the probability that fewer than five adults invested in mutual funds? f. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly one adult invested in mutual funds? g. Suppose a random sample of 20 U.S. adults is taken. What is the probability that 11 or more adults invested in mutual funds? h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number? Appendix A Statistical Tables *(Round your answers to 3 decimal places when calculating using Table A.2, e.g. 0.215.) *(Round your answer to 1 decimal places, e.g. 2.1.) **(Round your answer to 0 decimal places, e.g. 25.) * а. Р(x %3D 8) %3 b. P(x > 10) = c. Expected Value = d. P(x = 8) = е. Р(х < 5) - f. P(x = 1) = %3D g. P(x > 11) =
Transcribed Image Text:In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that 20% of all stock investors are retired people. In addition, 40% of all U.S. adults invest in mutual funds. Suppose a random sample of 25 stock investors is taken. a. What is the probability that exactly eight are retired people? b. What is the probability that 10 or more are retired people? c. How many retired people would you expect to find in a random sample of 25 stock investors? d. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly eight adults invested in mutual funds? e. Suppose a random sample of 20 U.S. adults is taken. What is the probability that fewer than five adults invested in mutual funds? f. Suppose a random sample of 20 U.S. adults is taken. What is the probability that exactly one adult invested in mutual funds? g. Suppose a random sample of 20 U.S. adults is taken. What is the probability that 11 or more adults invested in mutual funds? h. For parts e-g, what exact number of adults would produce the highest probability? How does this compare to the expected number? Appendix A Statistical Tables *(Round your answers to 3 decimal places when calculating using Table A.2, e.g. 0.215.) *(Round your answer to 1 decimal places, e.g. 2.1.) **(Round your answer to 0 decimal places, e.g. 25.) * а. Р(x %3D 8) %3 b. P(x > 10) = c. Expected Value = d. P(x = 8) = е. Р(х < 5) - f. P(x = 1) = %3D g. P(x > 11) =
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