Giving a test to a group of students, the grades and gender are summarized belowAB C TotalMale 1240Female 321611997 11Total 15 26 20Let p represent the population proportion of all female students who received a grade of C on thistest. Use a 80% confidence interval to estimate p to four decimal places if possible.

Solution : Given : The population proportion of all female students who received a grade of C on…

Answered: Giving a test to a group of students,…

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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Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 15 7 5 27 Female 12 20 3 35 Total 27 27 8 62 Let p represent the population proportion of all male students who received a grade of A on this test. Use a 98% confidence interval to estimate p to four decimal places if possible. < p <
You are interested in finding a 99% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 15 randomly selected college students. Round answers to 3 decimal places where possible. 1 7 12 10 2 0 9 0 7 11 6 11 10 2 12 b. With 99% confidence the population mean number of days of class that college students miss is between ? and ? days. c. If many groups of 15 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About ? percent of these confidence intervals will contain the true population mean number of missed class days and about ? percent will not contain the true population mean number of missed class days.
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You are interested in finding a 90% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 14 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 5 8 11 10 12 19 24 6 26 10 26 10 26 15 a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean commute for non-residential college students is between and miles. c. If many groups of 14 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 2 3 7 12 Female 8 17 4 29 Total 10 20 11 41 Let p represent the population proportion of all male students who received a grade of A on this test. Use a 99% confidence interval to estimate p to four decimal places if possible.? < p < ?
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Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 15 16 20 51 Female 17 18 8 43 Total 32 34 28 94 Let p represent the population proportion of all female students who received a grade of C on this test. Use a 90% confidence interval to estimate p to four decimal places if possible. < p <

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