Review Test 2 for Probability Statistics | PSYC 2503, Study notes of Probability and Statistics

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Test 2 Review: Chapters 4-6 Probability & Statistics Name. Solve the problem. 1) Classify the following random variable according to whether it is discrete or continuous. The number of cups of coffee sold in a cafeteria during lunch A) discrete B) continuous 2) Classify the following random variable according to whether it is discrete or continuous. The height of a player on a basketball team A) discrete B) continuous 3) Consider the given discrete probability distribution. Find the probability that x equals 5. x 2 5 6 9 Poy] 0.09 021 A) 2.35 B) 0.53 ©) 0.47 D) 2.65 4) Consider the given discrete probability distribution. Find P(x > 3). x T 2 3 4 5 pe) | df 2 2 3 2 A)7 B).2 Qs D).3 5) Consider the given discrete probability distribution. Find P(x = 4), x 0 1 2 3 4 5 pa | 30 25 20 15 05 05 A) 95 B) 10 ©) .05 Dy .90 6) A local bakery has determined a probability distribution for the number of cheesecakes it sells in a given day. The distribution is as follows: Number soldinaday | 0 5 10 15 20 Prob(Numbersold) [0.27 0.15 0.06 0.07 O0.51 Find the number of cheesecakes that this local bakery expects to sell in a day. A) 12.81 B) 10 ©) 12.6 D) 20 yy 4) 5) 6) WEST