Jennifer wonders what proportion of students believe in the value of an education. Assuming she has...
Jennifer wonders what proportion of students believe in the value of an education. Assuming she has no prior information about this subject, how many people should she interview so that her estimate for the true proportion will be in error by no more than 7%? Use an 80% confidence level.
Homework Answers
Where,
.......................Since,
preliminary estimate for proportion not given.
Z critical value for 80% confidence level (by using Z table) =1.282
| Sample size =84 |
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