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**Unformatted text preview: **116 CHAPTER 7. THE CENTRAL LIMIT THEOREM D. 4 hour Exercise 7.27: REVIEW QUESTION 3 (Solution on p. 119.) Suppose that it is now past noon on a delivery day. The probability that a person must wait at least 1 1 2 more hours is: A. 1 4 B. 1 2 C. 3 4 D. 3 8 Exercise 7.28: REVIEW QUESTION 4 (Solution on p. 119.) Given: X ~Exp 1 3 . a. Find P ( X > 1 ) b. Calculate the minimum value for the upper quartile. c. Find P X = 1 3 Exercise 7.29: REVIEW QUESTION 5 (Solution on p. 119.) 40% of full-time students took 4 years to graduate 30% of full-time students took 5 years to graduate 20% of full-time students took 6 years to graduate 10% of full-time students took 7 years to graduate The expected time for full-time students to graduate is: A. 4 years B. 4.5 years C. 5 years D. 5.5 years Exercise 7.30: REVIEW QUESTION 6 (Solution on p. 119.) Which of the following distributions is described by the following example?...

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