Question

Non-smoker 8 25 18 51 Light Smoker Medium Smoker Heavy Smoker Managerial Skilled Trades General Labor 21 94 83 198 19 26 28 59 24 31 62 26

1)Refer to the contingency table in Section 2.2 Exercises 9-22 of the text. If a randomly selected employee is in general labor, then find the probability that he/she is a medium smoker.

2) Refer to the contingency table in Section 2.2 Exercises 9-22 of the text. Find the probability that a randomly selected employee has a skilled trades job or is a heavy smoker.

3) Refer to the contingency table in Section 2.2 Exercises 9-22 of the text. If 4 employees are randomly selected, what is the probability that at least one of them has a managerial job?

4) Refer to the contingency table in Section 2.2 Exercises 9-22 of the text. If one employee from each of the four smoking categories is randomly selected, what is the probability that at least one of them has a managerial job?

Answer 1

Medium Smoke γ P (G) 2 8 8 3 12 Skilledl trode job or isa heay Smoles) 94G224 198T5 19K 19% mme has mama Jo : โ0136311 one ha a mmgeb) P (none has m jo) 43 C 2 S 62 C : 0.3418