In a Survey of 472 Personnel Directors,63% Thought That They

Multiple Choice

In a survey of 472 personnel directors,63% thought that they would be hiring new personnel over the next three months.Which of the following represents a 98% confidence interval for the proportion of all personnel directors planning to hire personnel over the next three months?

A) 0.63 ± 0.057
B) 0.63 ± 0.047
C) 0.63 ± 0.042
D) 0.63 ± 0.052