David is selling raffle tickets from door to door to raise money for charity. To reach his dailyfundraising goal, he needs to sell 10 tickets. He observes that, on average, an occupant in one inevery 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 theprobability that the average number of houses he visited per day was 35 or fewer.

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Answered: David is selling raffle tickets from…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Similar questions

A large bus company experience bus breakdowns at the rate of 2.5 per day. Find the probability that more than two breakdowns occur on two of the next 5 days.
A junk drawer at home contains nine pens, five of which work. What is the probability that you randomly grab two pens from the drawer and don’t end up with a pen that works? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
Find the probability that a driver with at least one collision in the past year is a middle aged adult driver.
You pay $20 to enter a raffle. The first ticket drawn wins $1036, the second ticket drawn wins $477, the third through fifth win $186, and the sixth through tenth win $49. Suppose 2345 tickets were sold. What is the expected earning on your ticket?
A dodechedral die (one with 12 sides, numbered from 1 to 12) is tossed once. Find the probability that the number on the upward face is not 10.
At bedtime, you read three books to your kids, Walker, Michael, and Luke. Together, they have 32 books. If you decide to randomly choose three books, what is the probability that the three you choose will consist of each of their favorite books? Assume they have different favorites. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
A machine has 32 identical components which function independently. The probability that a component will fail is 0.28. The machine will stop working if more than three components fail. Find the probability that the machine will be working. Round to the nearest thousandth.
Find the probability of obtaining a sum that is divided by 2 without remaining .from a single toss of a pair of dice
A magazine subscription service is having a contest in which the prize is 180000. If the company receives 3 million entries, which is the expection of the contest?
in a public control room there are on an average 3 calls per 10 minutes interval. find the probability of receiving 4 calls in a 10 minutes intervals?
A die numbered 1 through 6 is rolled twice. What is the probability of showing an odd number on the first roll and a number less than three on the second roll?

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