A public interest group hires students to solicit donations by telephone. After a brief training period, students make calls to potentaldonors and are paid on a commission basis. Experience indicates that early on, these students tend to have only modest success andthat 65% of them give up their jobs in their first two weeks of employment. The group hires 5 students, which can be viewed as arandom sample. What is the probability that at least 2 of the 5 will not qive up in the first two weeks? (Round to four decimal placesas needed)

Answered: Image /qna-images/answer/83b505af-66ee-434d-81e0-cc7313d1eacb.jpg

A public interest group hires students to solicit donations by telephone. After a brief training period, students make calls to potential donors and are paid on a commission basis. Experience indicates that early on, these students tend to have only modest sucess and that 65% of them give up their jobs in their first two weeks of employment. The group hires 5 students, which can be viewed as a random sample. What is the probability that at least 2 of the 5 will not give up in the first two weeks? (Round to four decimal places as needed)

A public interest group hires students to solicit donations by telephone. After a brief training period, students make calls to potential donors and are paid on a commission basis. Experience indicates that early on, these students tend to have only modest sucess and that 65% of them give up their jobs in their first two weeks of employment. The group hires 5 students, which can be viewed as a random sample. What is the probability that at least 2 of the 5 will not give up in the first two weeks? (Round to four decimal places as needed)

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...

See similar textbooks

Similar questions

Jenny works for a local brewing company. She and her team mates try to estimate the Hong Kong consumers’ preference on their beer brand compared to other imported ones. They performed a survey asking if the respondent prefers the company’s brand the most or not. Based on this survey result, they want to decide how much money the company needs to invest on brand promotions in the coming year. This is an important decision for the company, and the management wants to have the probability that the sample proportion p is +/- 3% from the actual proportion p to be very high (i.e., at least 99%). In this case, what is the desirable sample size n for the following two cases? Give the answer in the form of: at least ___ x100 samples. Case i. When the actual proportion is 50%. Case ii. When the actual proportion is 10%. Explain why the sample sizes required to achieve the same accuracy in the two cases are different.
When purchasing bulk orders of batteries, a toy manufacturer uses this acceptance sampling plan. Randomly select and test 45 batteries and determine whether each is within specifications. the entire shipment is accepted if at most 2 batteries do not meet the requirements. A shipment contains 3000 batteries and 2% of them do not meet specifications. What is the probability that this whole shipment will be accepted? Will almost all such shipments be accepted or will many be rejected?
Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample of 146 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.28 and 0.46?
Based on historical data, your manager believes that 34% of the company's orders come from first-time customers. A random sample of 175 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is less than 0.33?
Based on historical data, your manager believes that 31% of the company's orders come from first-time customers. A random sample of 119 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.24 and 0.37?
According to Harper's Index, 60% of all federal inmates are serving time for drug dealing. A random sample of 15 federal inmates is selected. (c) What is the expected number of inmates serving time for drug dealing?
Based on historical data, your manager believes that 25% of the company's orders come from first-time customers. A random sample of 79 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is less than 0.31?
A dowser has correctly located water for a well 1 out of 2 times in Jones County. In Jones County, someone who is just guessing has a 40% chance of locating water for a well. Does this sample provide sufficient evidence that the dowser can locate water and is not just guessing?
27.4% of males and 22.8% of females never eat breakfast. Suppose that random samples of 200 men and 200 women are drawn. What is the probability that no more than 108 of these 400 people never eat breakfast?
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 102 people in the 18-21 age bracket and finds that 87 of them respond and 15 refuse to respond. When 249 people in the 22-29 age bracket are contacted, 220 respond and 29 refuse to respond. Assume that 1 of the 351 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who responds. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(22-29 or responds) = %3D (Hint: It might be helpful to organize the data into a table first.) Submit Question 17,194 7. NOV tv 17 MacBook Air