PracticeFinalC4_6

# PracticeFinalC4_6 - PracticeFinalpart2 Math160...

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Practice Final part 2 Math 160 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. 1) State whether the variable is discrete or continuous. The height of a player on a basketball team A) discrete B) continuous 1) 2) State whether the variable is discrete or continuous. The cost of a Statistics textbook A) discrete B) continuous 2) 3) The random variable x represents the number of cars per household in a town of 1000 households. Find the probability of randomly selecting a household that has less than two cars. Cars Households 0 125 1 428 2 256 3 108 4 83 A) 0.809 B) 0.125 C) 0.428 D) 0.553 3) 4) The random variable x represents the number of credit cards that adults have along with the corresponding probabilities. Find the mean and standard deviation. x P(x) 0 0.07 1 0.68 2 0.21 3 0.03 4 0.01 4) 5) A test consists of 90 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. 5)

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