Please answer both questions Save Homework: Section 4-3 HW 4 of 18 (18 complete

Question

Please answer both questions

Save Homework: Section 4-3 HW 4 of 18 (18 complete Assigned Media EQuestion Hel Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. Apollster contacts 89 people in the 18-21 age bracket and finds that 51 orthem respond and 38 refuse to respond. When 291 people in the 22-29 age bracket are contacted, 248 respond and 43 refuse to respond Suppose that one of the 380 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who refused to respond. P(p on ISS in the 22-29 age bracket or refused to respond) ers (Do not round until the final answer. Then round to three decimal places as needed.

Explanation / Answer

1)

probabilty that in 22-29 agegroup or refuse =(291+38)/380 = 0.8658

2)

probability = (1055+20+33)/1237=0.8957

18-21 22-29 total respond 51 248 299 refused 38 43 81 total 89 291 380

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