David is selling raffle tickets from door to door to raise money for charity. To reach his daily fundraising goal, he needs to sell 10 tickets. He observes that, on average, an occupant in one in every three houses he visits will buy a ticket. a) Find the probability that on a given day he reaches his daily goal after visiting exactly 35 houses. b) In one month, David worked on 20 days, and met his daily goal on each day. Estimate the probability that the average number of houses he visited per day was 35 or fewer.

David is selling raffle tickets from door to door to raise money for charity. To reach his daily fundraising goal, he needs to sell 10 tickets. He observes that, on average, an occupant in one in every three houses he visits will buy a ticket. a) Find the probability that on a given day he reaches his daily goal after visiting exactly 35 houses. b) In one month, David worked on 20 days, and met his daily goal on each day. Estimate the probability that the average number of houses he visited per day was 35 or fewer.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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