# PA  B = 02, PA = 06, PB = 05 Calculate the...

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Name ____________________________ Stat 131 Test 1 Show all work. Do in pencil. Don’t round until your final answer. Show as many decimals as practical to clearly indicate your final answer. Circle or mark your final answer. 1 P[A B] = 0.2, P[A] = 0.6, P[B] = 0.5 . Calculate the following: (8 points) a P[ B A b P[ B A c P[ B A 2 In a survey of 120 students, the following data was obtained: 60 took English 56 took Math 42 took Chemistry 34 took English and Math 20 took Math and Chemistry 16 took English and Chemistry 20 more students took none of these classes than the total who took all three Calculate the number of students who did not take any of these three classes. Also, calculate how many students took Math, but not English or Chemistry. (10 points) ] ] ]
3 A business offers a health plan to its employees. The employees must choose either none of the supplementary plans or exactly two of the plans A, B or C. The proportions of the business’s employees who choose plans A, B or C are , or ଵଶ . Calculate the probability that
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