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.
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=
Step by step
Solved in 2 steps with 2 images
