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Student:_ TEST -2 Ch. 10 ,5 Date: Instructor: Igor Yatskar d. Find the mean 1 . Find the value of th - . . TEST-2 Ch. 10,5 20 Assume that a procedure yields a binomial distribution with a trial repeated n = 30 times. Use the binomial probability formula to find the probability of x = 5 numb successes given the probability p = of success on a single trial. Round to three decimal places. cesto .a A. 0.421 B. 0.198 O C. 0.067 OD. 0.172 2. Based on a Comcast survey, there is a 0.8 probability that a randomly selected adult will watch prime-time TV live, instead of online, on DVR, etc. Assume that seven adults are randomly selected . Find the probability that fewer than three of the selected adults watch prime-time live. 3x. Als A. 0.00430 ability distribution to O B. 0.00467 subjects among the O C. 0.000358 D. 0.0512 0.8 8 13. In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, what is the probability that no more than 6 belong to an ethnic minority? Round to three decimal places. A. 0.055 OB. 0.913 C. 0.985 OD. 0.981 14. In a certain town, 22% of voters favor a given ballot measure. For groups of 21 voters, find the variance for the number who favor the measure. tly high A. 4.6 voters O B. 1.9 voters 2 O C. 3.6 voters2 OD. 13 voters2 15. Find the standard deviation, , for the binomial distribution which has the stated values of n and p. Round your answer to the nearest hundredth. n = 503; p = 0.7 O A. = 10.28 O B. = 13.55 O C. 6=7.87 OD. =14.40 16. On a multiple choice test with 17 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers. Round to the nearest tenth as needed . O A. 12.8 questions O B. 4.3 questions O C. 8.5 questions O D. 5.7 questions 17. The probability that a car will have a flat tire while driving through a certain tunnel is 0.00005. Use the Poisson distribution to approximate the probability that among 14,000 cars passing through this tunnel, exactly two will have a flat tire. Round your answer to four decimal places. O A. 0.1947 O B. 0.1703 O C. 0.1460 O D. 0.8783 O E. 0.1217 https://xlitemprod.pearsoncmg.com/api/v1/print/math