Statistics - Practice Set 2

Statistics - Practice Set 2 - Multiple choice set 2 INFO:...

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Unformatted text preview: Multiple choice set 2 INFO: practice multiple choice questions related to chapters 3, 4, 5 and assignment 3. Q 1. A factory employs several thousand workers, of whom 30% are from non-English speaking background. If 15 members of the union executive committee were chosen from the workers at random, evaluate the probability that exactly 3 members of the committee are non-English background people. (a) 0.17 (b) 0.83 (c) 0.98 (d) 0.51 (e) none of the preceding Solution to Q1: Y- number with non-English background. Y B (15 , . 3), to compute P ( Y = 3) = 0 . 17 Q 2. On average, one person in a hundred will carry a certain mutant gene. 60 people are tested. What is the probability that 5 or more of these people will be found to carry the gene? (choose the closest answer) (a) 1.00000 (b) 0.99965 (c) 0.00035 (d) 0.01 (e) none of the preceding The MINITAB output will help you to solve this problem: Binomial with n = 60 and p = 0.01 x P( X = x ) 0.547157 1 0.331610 2 0.098813 3 0.019297 4 0.0027780....
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Statistics - Practice Set 2 - Multiple choice set 2 INFO:...

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