MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The bookstore at IRSC would like to estimate the proportion of students who prefer electronic textbooks (eBooks) over printed textbooks (hard copies). A random sample of 30 students was surveyed. Their preferences are listed below.

hard copy hard copy hard copy eBook    eBook   
eBook    hard copy eBook    hard copy eBook   
hard copy hard copy hard copy hard copy hard copy
hard copy hard copy hard copy hard copy hard copy
hard copy hard copy hard copy hard copy hard copy
hard copy hard copy hard copy hard copy hard copy


Determine the point estimate, p^ and the sample standard deviation, sˆp^. Round the sample proportion to four decimal places and round the standard deviation to six decimal places, if necessary

 

p^=

s with the p^=

Using a 96% confidence level, determine the margin of error, E, and a confidence interval for the proportion of all students at the college who work prefer eBooks over printed textbooks. Report the confidence interval using interval notation. Report the solutions in percent form, rounded to two decimal places, if necessary.

The margin of error is given by E=

A 96% confidence interval is given by=

 

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