In a lot of 50 light bulbs, there are 2 bad bulbs. An inspector examines 5 bulbs, which areselected at random and without replacement.a) Find the probability of at least 1 defective bulb among the 5.b) How many bulbs should be examined so that the probability of finding at least 1 badbulb exceeds 1/2?

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Answered: In a lot of 50 light bulbs, there are 2…

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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A small convenience store has on average 30 customers per hour. a) Find the probability that in a 10 minute period 4 customers visit the store. b) Find the probability that in a 6 minute period fewer than 3 customers visit the store. c) Find the probability that in a 6 minute period more than 1 customer visits the store. can you solve this for me by showing step by step for each question
On the average 9 customers arrive each hour at the checkout counter at a local pharmacy store. a) What is the probability than more than 5 customers will arrive at the checkout in one hour? b) What is the probability than less than 4 customers arrive at the checkout counter in 30 minutes? Show your works and read the table.
3) Each year, Sydney, Australia, on average, gets hit by 4 tropical storms. Find the probability that in a given year that area will be hit by more than 2 storms. (5 pts.)
3% of the workers in a factory are union members. A random sample of 5 workers is taken from these workers. a) Find the probability that the sample consists exactly 4 union members. b) Find the probability that the sample consists of at most 2 union members.
A local county has an unemployment rate of 6%. A random sample of 16 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 4 in the sample are unemployed. b) Find the probability that there are fewer than 3 in the sample are unemployed. c) Find the probability that there are more than 2 in the sample are unemployed. d) Find the probability that there are at most 3 in the sample are unemployed.
A survey in a Ruga community indicates, 15% of the inhabitants are herders. 10 people areinterviewed at random if they herders or not, find the probability that exactly 3 persons chosenat are herders. Use combination method to solve question
Assume this year's flu vaccine has a 80% chance of being effective. If the vaccine is given to 333 randomly selected people, answer the following. d) What is the probability that exactly 264 of them did not get the flu? Round final answer to 4 decimal places. e) What is the probability that less than 264 of them did not get the flu? Round final answer to 4 decimal places. f) What is the probability that more than 264 of them did not get the flu? Round final answer to 4 decimal places.
Assume that 9% of people are left-handed. If 4 people are selected at random, find the probability of each outcome described below. ts a) Find the probability that the first lefty is the fourth person chosen. (Round to four decimal places as needed.)
The number of vehicles that a car rental company rents daily is 5. According to this; a)What is the probability of renting up to 2 vehicles? b)What is the probability that 3 vehicles will be hired in any 3 out of the next 5 days?
Assume that the average number of births in a hospital is 3 births per shift.a) What is the probability that more than one child will be born in one shift?b) What is the probability that six children will be born in two shifts?
According to the American Dental Association, 60% of all dentists use nitrous oxide in their practice. In a random sample of 600 dentists, what is the probability that at least 57% of those dentists use nitrous oxide in their practice? b) Suppose that you take a random of 120 Americans, what is the probability that 8 % or more of these 120 people have diabetes?

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