# SOLUTION: Why isn't spinning a roulette wheel 4 times, keeping track of the winning >numbers a binomial of distribution? > > A test consists of 10 true/false questions. To pass the test

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: Why isn't spinning a roulette wheel 4 times, keeping track of the winning >numbers a binomial of distribution? > > A test consists of 10 true/false questions. To pass the test       Log On

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 Algebra: Probability and statistics Solvers Lessons Answers archive Quiz In Depth

 Question 350677: Why isn't spinning a roulette wheel 4 times, keeping track of the winning >numbers a binomial of distribution? > > A test consists of 10 true/false questions. To pass the test a student must > answer at least 7 questions correctly. If a student guesses on each > question, what is the probability that the student will pass the test? > > A study conducted at a certain college shows that 75% of the school's > graduates find a job in their chosen field within a year after graduation. > Find the probability that 8 randomly selected graduates all find jobs in > their chosen field within a year of graduating. > > You are dealt two cards successively (w/o replacement) from a shuffled deck > of 52 playing cards. Find the probability that both cards are black. > > Find the standard deviation if x=0 and P(X)=.15, x=1 and P(X)=.33, x=2 and > P(x)=.05, x=3 and P(x)=.19, x=4 and P(x)=.28 > > Thank you and if you could show me how you worked the problems out that > would be very helpful! >Answer by Fombitz(13828)   (Show Source): You can put this solution on YOUR website! >Why isn't spinning a roulette wheel 4 times, keeping track of the winning >numbers a binomial of distribution? . . Binomial distributions only work when two choices are available, heads or tails on a coin, True or False on a test. A roulette wheel has multiple numbers (more than 2), 3 colors (red, black, and green) so could not be modeled as a binomial distribution. . . . > You are dealt two cards successively (w/o replacement) from a shuffled deck > of 52 playing cards. Find the probability that both cards are black. . . . Once a black card is dealt, the total number of black cards and total cards reduces by 1. Then So then to get the probability of drawing two black cards in a row, multiply the individual probabilities together.