3401%20Unit%203%20Practice

3401%20Unit%203%20Practice - ECO 3401 Unit 3 Practice Exam...

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ECO 3401 Unit 3 Practice Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write the sample space for the given experiment. 1) A coin is tossed, and then a die is rolled. 1) A) {(h, 1), (h, 2), (h, 3), (h, 4), (h, 5), (h, 6), (t, 1), (t, 2), (t, 3), (t, 4), (t, 5), (t, 6)} B) {(2, 6)} C) {(h, t, 1, 2, 3, 4, 5, 6)} D) {(1, h), (2, h), (3, h), (4, h), (5, h), (6, h), (1, t), (2, t), (3, t), (4, t), (5, t), (6, t)} 2) A card is selected at random from a deck and its suit is recorded. Then a coin is tossed. 2) A) {(head, spade), (head, club), (head, heart), (head, diamond), (tail, spade), (tail, club), (tail, heart), (tail, diamond)} B) {(4, 2)} C) {(spade, head), (club, head), (heart, head), (diamond, head), (spade, tail), (club, tail), (heart, tail), (diamond, tail)} D) {(club, diamond, heart, spade, head, tail)} Find the indicated probability. 3) The distribution of B.A. degrees conferred by a local college is listed below, by major. Major Frequency English 2073 Mathematics 2164 Chemistry 318 Physics 856 Liberal Arts 1358 Business 1676 Engineering 868 9313 What is the probability that a randomly selected degree is in Engineering? 3) A) 868 B) 0.0012 C) 0.1028 D) 0.0932 4) Find the probability that a number less than 5 is obtained when a fair die is rolled. 4) A) 1 2 B) 5 6 C) 2 3 D) 0 Find the indicated probability. 5) If P(A 1 B) = 0.65, P(A) = 0.34, and P(B) = 0.48, find P(A . B). 5) A) 0.58 B) 0.17 C) 0.29 D) 0.13 1
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Solve the problem. 6) A poll is conducted in a U.S. city to determine voting preferences prior to a presidential election. The following probabilities were obtained from the relative frequencies: P(D) = 0.51, P(M) = 0.48, P(M . D) = 0.36 where M represents male and D represents a person who plans to vote Democrat. Find P(M 1 D). 6) A) 0.63 B) 0.78 C) 0.71 D) 0.49 7) 44% of a store's computers come from factory A and the remainder come from factory B. 2% of computers from factory A are defective while 4% of computers from factory B are defective. If one of the store's computers is selected at random, what is the probability that it is defective and from factory A? 7) A) 0.009 B) 0.98 C) 0.980 D) 0.431 Use the given table to find the indicated probability. 8) People in a survey were given three choices of soft drinks and asked to choose one favorite. The following table shows the results. cola
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3401%20Unit%203%20Practice - ECO 3401 Unit 3 Practice Exam...

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