Answered: 8. Let µ represent the population mean…

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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8. Let µ represent the population mean height of all adult American males between the ages of 18 and 21. You want to answer the question "Is the mean height for all adult American males between the ages of 18 and 21 now over 6 feet?" What are the appropriate null and alternative hypotheses to answer this question?

A. Ho: X̄ = 6 vs. Ha: X̄ > 6

B. Ho: X̄ = 6 vs. Ha: X̄ ≠ 6

C. Ho: µ = 6 vs. Ha: µ > 6

D. Ho: µ > 6 vs. Ha: µ = 6

9. You were told that the 1st, 2nd, and 3rd quartiles of female students weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh between 95 and 138 Ibs?

A. 25%

B. 50%

C. 75%

D. 90%

10. In an assembly line, two inspectors correctly detect defective items with probabilities 0.90 and 0.91 respectively. Assuming their evaluations are independent of each other, what is the probability that the two inspectors will BOTH correctly detect defective items?

A. 0.90(0.91)

B. 1 - 0.90(0.91)

C. (1 - 0.90)(1 - 0.91)

D. 1- (1 - 0.90)(1 - 0.91)

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