A University's Administrator Proposes to Do an Analysis of the Proportion

Multiple Choice

A university's administrator proposes to do an analysis of the proportion of graduates who have not found employment in their major field one year after graduation.In previous years,the percentage averaged 13%.He wants the margin of error to be within 4% at a 99% confidence level.What sample size will suffice? Use 2.575 as the critical value for a 99% confidence interval.

A) 191
B) 19
C) 272
D) 563
E) 469