A sample of college students was asked whether they would return the money if they found a wallet on the street. Of the 93 women, 87 said "yes," and of the 75 men, 52 said "yes." Assume that these students represent all college students. (a) Find separate approximate 95% confidence intervals for the proportions of college women and college men who would say "yes" to this question. (Round the answers to three decimal places.) __to__ for women ____to___ for men (b) Find an approximate 95% confidence interval for the difference in the proportions of college men and women who would say "yes" to this question. (Use pwomen − pmen. Round your answers to three decimal places.) ___to ___ (c) Complete the sentences interpreting the intervals in parts (a) and (b). The two separate intervals make it evident that the proportion is higher for the population of ____ . This is confirmed in part (b), because the interval for the difference in proportions does not include ___, so we can conclude that a difference exists.
A sample of college students was asked whether they would return the money if they found a wallet on the street. Of the 93 women, 87 said "yes," and of the 75 men, 52 said "yes." Assume that these students represent all college students. (a) Find separate approximate 95% confidence intervals for the proportions of college women and college men who would say "yes" to this question. (Round the answers to three decimal places.) __to__ for women ____to___ for men (b) Find an approximate 95% confidence interval for the difference in the proportions of college men and women who would say "yes" to this question. (Use pwomen − pmen. Round your answers to three decimal places.) ___to ___ (c) Complete the sentences interpreting the intervals in parts (a) and (b). The two separate intervals make it evident that the proportion is higher for the population of ____ . This is confirmed in part (b), because the interval for the difference in proportions does not include ___, so we can conclude that a difference exists.
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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A sample of college students was asked whether they would return the money if they found a wallet on the street. Of the 93 women, 87 said "yes," and of the 75 men, 52 said "yes." Assume that these students represent all college students.
(a) Find separate approximate 95% confidence intervals for the proportions of college women and college men who would say "yes" to this question. (Round the answers to three decimal places.)
__to__ for women
____to___ for men
(b) Find an approximate 95% confidence interval for the difference in the proportions of college men and women who would say "yes" to this question. (Use
___to ___
(c) Complete the sentences interpreting the intervals in parts (a) and (b).
The two separate intervals make it evident that the proportion is higher for the population of ____ .
This is confirmed in part
__to__ for women
____to___ for men
(b) Find an approximate 95% confidence interval for the difference in the proportions of college men and women who would say "yes" to this question. (Use
pwomen − pmen.
Round your answers to three decimal places.)___to ___
(c) Complete the sentences interpreting the intervals in parts (a) and (b).
The two separate intervals make it evident that the proportion is higher for the population of ____ .
This is confirmed in part
(b), because the interval for the difference in proportions does not include ___, so we can conclude that a difference exists.
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