Suppose a cable network wants to determine the current percentage of customers who are under the age of twenty. How many customers should the network survey in order to be 90% confident that the estimated (sample) proportion is within 3 percentage points of the true population proportion of customers who are under the age of twenty? z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576

Suppose a cable network wants to determine the current percentage of customers who are under the age of twenty. How many customers should the network survey in order to be 90% confident that the estimated (sample) proportion is within 3 percentage points of the true population proportion of customers who are under the age of twenty? z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576

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

Related questions

Q: Suppose the percent of licensed U.S. drivers (from a recent year) that are female is 48.30. Of the…

A: The study under consideration is percentage of licensed us drivers. Let F denote the female licensed…

Q: you have been assigned the task of conducting a survey to study prescription medication purchases of…

A: Given: Confidence Level = 0.95

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

A: Solution

Q: Suppose 4 percent of the children in the US are thought to be near the juvenile diabetes threshold.…

Q: What is the sampling error for an estimate of the population proportion, p = 0.36, if the true…

A: We have to find the sampling error for an estimate of the population proportion

Q: Determine the sample proportion. It has been determined with 95% confidence that the proportion of…

Q: The average house has 10 paintings on its walls. Is the mean larger for houses owned by teachers?…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.05

Q: Nationally, 83% of Americans have earned a high school diploma. We want to see if the proportion of…

A: We have to find sample proportion.

Q: What term is used to explain the natural difference between a sample mean the overall population…

A: What term is used to explain the natural difference between a sample mean the overall population…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: Why do you think any serious researcher would use the sample mean to estimate for the population…

A: Generally research is carried out to determine a particularoutcome in the targeted…

Q: How is a sample related to a population?

A: Population is set of all elements about which we want to know. While the sample is a part of such…

Q: How much difference is there between the mean for the treated sample and the mean for the original…

A: Definition Sample Mean x It is the mean of all the values of a sample. Population μ It is the mean…

Q: A researcher collects the following data from 5 college students regarding the number of times they…

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: As per our guidelines we are supposed to answer only one question per post. Given that, margin of…

Q: Based on historical data in Oxnard college, we believe that 39% of freshman do not visit their…

A: Given Information:p=39%=0.39c=95%=0.95Margin of error, E=3%=0.03

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

Q: And a pool, 102 of 1020 randomly selected adults age 18 or older stated that they believe there is…

Q: Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them…

Q: A survey (sample ) of 300. 112 favor Republican candidate. Construct the 98%CL for the true…

A: Given that, The sample proportion is,

Q: A researcher wants to calculate the prevalence of Alzheimer’s among members of a specific community…

A: Solution: Given information: Margin of error = E= 0.01 Population proportion = p = 0.1073 Confidence…

Q: 8 is incorrect. How many people are considered morbidly obese is blank?

A: (a) Morbidly obese countA dot plot is a type of visualization that works by using dots to explicitly…

Q: Use these results from a USA Today survey in which 510 people choseto respond to this question that…

Q: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

Q: Thirty-three percent of all Americans drink bottled water more than once a week (Natural resources…

A: Note: Hi there! Thank you for posting the question. Unfortunately in the sub-part(b), some required…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

Q: Harley Davidson motorcycles make up 13% of all the motorcycles registered in the United States.You…

A: Approximate distribution is normal

Q: A business magazine article claims that a majority of women age 22 to 35 who work full time would be…

A: given data claim : p >0.5n = 1000x = 540p value = ?

Q: Step 2 of 3 : Compute the value of the test statistic. Round your

A: claim : the percentage of commercial truck drivers who suffer from sleep apnea is not 3.1%simple…

Q: Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an…

A: No, Sample Mean is not the most frequent Occuring Value. Mean= Sum of Observations / No.of…

Q: You have been hired by a consortium of local car dealers to conduct a survey about the purchases of…

A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

Q: What value should we expect for our sample proportion?

A: We have to answer question based on proportion.

Q: The Human Resource Manager at a manufacturing plant noticed that there was a high rate of…

A: Given data : 100 employees who arrived first to work on certain day from all employees who arrived…

Question

z0.10	z0.05	z0.025	z0.01	z0.005
1.282	1.645	1.960	2.326	2.576

z0.10

z0.05

z0.025

z0.01

z0.005

1.282

1.645

1.960

2.326

2.576

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

To determine the proportion of Americans who support affirmative action policies for minorities and women seeking admission to colleges and universities, a sociologist wants to run a poll. What sample size should be collected if she wants the estimate to have a 90% confidence level and be within 4 percentage points?
A health organization wants to estimate the population proportion of Ohioans who have received the flu vaccine this year. Before starting this study, they need to know how many Ohioans need to be surveyed to be 99% confident that they are within 4% of the true population proportion. What is the sample size needed for this study?
We'd like to know the percentage of people living in California who owns a cell phone. How many people in California must be surveyed in order to be 95% confident that the sample proportion is in error by no more than 4 percentage points?
Suppose a clothing store wants to determine the current percentage of customers who are over the age of forty. How many customers should the company survey in order to be 92% confident that the estimated (sample) proportion is within 5 percentage points of the true population proportion of customers who are over the age of forty? z0.16 z0.08 z0.04 z0.02 z0.01 0.994 1.405 1.751 2.054 2.326 Use the table of values above.
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 9595% confident that the sample percentage is within 2.52.5 percentage points of the true population percentage. Complete parts (a) and (b) below.
4
Please show work In a sample of 100 people, 57 completed only high school, 23 went on to complete only some college, 13 went on to complete a two-year or four-year college, and 7 went on to graduate school. What proportion of the sample does not have a two-year or four-year college degree? 0.07 0.13 0.80 0.87
And automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Suppose a sample of 383 new car buyers is drawn, of those sampled 137 prefer foreign over domestic. Using the data, estimate the proportion of new car buyers who prefer foreign cars. Enter your answer as a fraction or decimal rounded to three decimal places.
A survey was developed to estimate the average number of hours per week that adults spend exercising. Every third person entering a large fitness complex was surveyed, with a total of 2,500 people being surveyed. The data showed that the mean number of hours spent exercising was 3.2 hours per week. Which characteristic of the survey could create a bias in the results? The size of the sample The size of the sample The method of analyzing the data The method of analyzing the data The method of choosing the people who were surveyed The method of choosing the people who were surveyed The size of the population
It is thought that 12% of all students taking a particular course received a grade of A. In a sample of 155 students, it is found that 21 made an A. What is the test statistic for testing the true proportion is 12%?
A researcher wants to determine the percentage of American teenagers who send or receive text messages while doing homework. Which of the following techniques would likely be the MOST efficient way of obtaining an accurate estimate for this percentage? 1. Randomly select teenagers from the list of all teenage students in every state in America and mail surveys to those teens, asking them if they send or receive text messages while doing homework. 2. Send a survey to every teenager in America and ask them if they send or receive text messages while doing homework. 3. Randomly select teenagers from the list of all teenage students in one state and mail surveys to those teens, asking them if they send or receive text messages while doing homework.
Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep. This condition results in lack of sleep and extreme fatigue during waking hours. A current estimate is that 11.911.9 million out of the 312.7312.7 million Americans suffer from sleep apnea, or approximately 3.8%3.8%. A safety commission is concerned about the percentage of commercial truck drivers who suffer from sleep apnea. They do not have any reason to believe that it would be higher or lower than the population’s percentage. To test the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 3.8%3.8%, a simple random sample of 347347 commercial truck drivers is examined by a medical expert, who concludes that 66 suffer from sleep apnea. Does this evidence support the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 3.8%3.8%? Use a 0.020.02 level of significance. Step 3 of 4 : Find the p-value. Round…