STATS - QUIZ 3.pdf

# STATS - QUIZ 3.pdf - Review for Test 3 STA2023VC MULTIPLE...

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Unformatted text preview: Review for Test 3 - STA2023VC MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Identify the given random variable as being discrete or continuous. 1) The height of a randomly selected student 1) A) Continuous B) Discrete SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Determine whether the following is a probability distribution. If not, identify the requirement that is not satisﬁed. 2) If a person is randomly selected from a certain town, the probability distribution for the 2) number, x, of siblings is as described in the accompanying table. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the mean of the given probability distribution. 3) The number of golf balls ordered by customers of a pro shop has the following probability 3) distribution. A)p=9.66 B) p=6.99 C) p.=7.86 D) [4:9 Provide an appropriate response. Round to the nearest hundredth. 4) Find the standard deviation for the given probability distribution. 4) A) a: 1.35 B) a: 1.70 C) o= 2.90 D) a: 1.30 Provide an appropriate response. 5) Suppose you buy 1 ticket for \$1 out of a lottery of 1,000 tickets where the prize for the one winning 5) ticket is to be \$500. What is your expected value? A) 40.50 B) \$0.00 C) -\$0.40 D) -\$1.00 Determine whether the given procedure results in a binomial distribution. If not, state the reason why. 6) Rolling a single die 47 times, keeping track of the "ﬁves" rolled. 6) A) Procedure results in a binomial distribution. B) Not binomial: there are too many trials. C) Not binomial: the trials are not independent. D) Not binomial: there are more than two outcomes for each trial. Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. Round to three decimal places. 7)n=6,x=3,p=% 7) A) 0.054 B) 0.015 C) 0.032 D) 0.029 Find the indicated probability. Round to three decimal places. 8) An airline estimates that 97% of people booked on their flights actually show up. If the airline 8) books 70 people on a flight for which the maximum number is 68, what is the probability that the number of people who show up will exceed the capacity of the plane? A) 0.375 B) 0.649 C) 0.257 D) 0.119 Find the mean, u, for the binomial distribution which has the stated values of n and p. Round answer to the nearest tenth. 9) n = 2772; p = 0.63 9) A) u = 1750.1 B) p. = 1746.4 C) u = 1741.1 D) u: 1737.9 Find the standard deviation, 0, for the binomial distribution which has the stated values of n and p. 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• Fall '16
• Normal Distribution, Probability theory, Binomial distribution, Cumulative distribution function, Discrete probability distribution, w M. Huh

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