D. cannot be determined Q39. Many people can run a short distance of under two m
ID: 3321789 • Letter: D
Question
D. cannot be determined Q39. Many people can run a short distance of under two miles, but as the distance increases, fewer people can run that far. Which of the following distributions is described by the following example? A. Binomial B. Uniform C. Normal D. Exponential Q40. The probability that a certain hockey team will win any given game is 0.3815 based on their 13 year win history of 396 wins out of 1038 games played (as of a certain date). Their schedule for November contains 12 games. Let X-number of games won in November. Find the probability that the hockey team wins at least 9 games in November. (Round your answer to four decimal places.) A. 0.9892 B. 0.0108 C. 0.2312 D. 0.7688 Q41. Suppose that the PDF for the number of years it takes to earn a Bachelor of Science (B.S.) degree is given as in the table below. On average, how many years do you expect it to take for an individual to earn a B.S.? (Round your answer to two decimal places.) 3 0.05 4 0.50 5 0.10 6 0.25 7 0.10 A. 0.70 B. 4.85 C. 4.20 D. 0.90Explanation / Answer
Q 39) Correct answer: Option (B)
Q 40) given n = 12, p = 0.3815
P(X>=9) = 0.0108 using binomial distribution
Correct answer: Option (B)
Q 41) Mean = 3*0.05 + 4*0.5 + 5*0.10 + 6*0.25 + 7*0.10 = 4.85
Correct answer: Option (B) 4.85
Q 42) Correct answer: option (D)
Q 43) P(H or G) = P(H) + P(G) - P(H and G) = 0.21 + 0.46 - 0.12 = 0.55
Correct answer: Option (B) 0.55
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