There is a popular lottery in which a ticket is called a scratcher. An advertisement for this lottery claims that 62% of the population of all the scratchers are winning ones. You want to research this daim by selecting a random sample of 25 scratchers. Follow the steps below to construct a 90% confidence interval for the population proportion of all winning scratchers. Then state whether the confidence interval you construct contradicts the advertisement's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from the random sample. Number Proportion Take Sample Winning scratcher 11 0.44 Losing scratcher 14 0.56 Enter the values of the sample size, the point estimate of the population proportion, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: Standard error: Critical values Point estimate: F0.00s -2.576 Margin of error: 20.010-2.326 Critical value: F0.025 -1.960 90% confidence interval: 20oso1.645
There is a popular lottery in which a ticket is called a scratcher. An advertisement for this lottery claims that 62% of the population of all the scratchers are winning ones. You want to research this daim by selecting a random sample of 25 scratchers. Follow the steps below to construct a 90% confidence interval for the population proportion of all winning scratchers. Then state whether the confidence interval you construct contradicts the advertisement's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from the random sample. Number Proportion Take Sample Winning scratcher 11 0.44 Losing scratcher 14 0.56 Enter the values of the sample size, the point estimate of the population proportion, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: Standard error: Critical values Point estimate: F0.00s -2.576 Margin of error: 20.010-2.326 Critical value: F0.025 -1.960 90% confidence interval: 20oso1.645
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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