An automotive manufacturer wants to knowthe proportion of new car buyers who preferforeign cars over domestic. Step 2 of 2:Suppose a sample of 897 new car buyers isdrawn. Of those sampled, 304 preferredforeign over domestic cars. Using the data,construct the 95% confidence interval for thepopulation proportion of new car buyers whoprefer foreign cars over domestic cars.Round your answers to three decimal places.

A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Answered: An automotive manufacturer wants to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In 2008, as an advertising campaign, the Nabisco Company announced a "1200 Chips Challenge," claiming that their 18-ounce bag of Chips Ahoy cookies contained an average of at least 1200 individual chocolate chips. Dedicated statistics students at the Air Force Academy (no kidding, they actually did this) purchased some randomly selected bags of cookies and counted the chocolate chips. Data from their sample is given below. %3D 1219, 1214, 1087, 1200 , 1419,1121 , 1325 , 1345 , 1244, 1258 , 1356, 1132, 1191 , 1270, 1295, 1135 Find a 95% confidence interval for the population mean number of chips in a bag of Chips Ahoy Cookies. (Give final answers to 2 decimal place accuracy) ANSWER: It can be stated with 95% confidence that the true population mean number of chocolate chips in a bag of Chips Ahoy Cookies lies in the interval <μ < chocolate chips per bag Based on this confidence interval, is the Nabisco Company justified in making their claim? O yes, because the true population mean is…
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1. A scientist is studying the effect of exercise on blood pressure. He studies 50 people who exercise regularly to find out whether their blood pressures are low, average, or high. This is an example of a(n): Answer choices: sample survey. observational study. experiment.
Among US Households, only 15% have a landline phone. A telemarketing campaign will involve a SRS of 2250 households. Let X be the number of households that have a landline phone among the 2250 households randomly chosen. What is the mean of X? Do Not Round.
Of a graduate school that has 2000 business majors, 500 finance majors and 300 biology majors, a researcher starts at the least-numbered student ID and continues until she has collected the names of 200 business students, 50 finance students and 30 biology students. What type of sampling technique does this represent? Explain your reasoning.
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An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over domestic. Step 2 of 2: Suppose a sample of 897 new car buyers drawn. Of those sampled, 304 preferred