The US Department of Labor Wants to Estimate the Percentage of of Females

Multiple Choice

The U.S. Department of Labor wants to estimate the percentage of females in the labor force to within ±2% with 90% confidence. As a planning value they use 46%, the
Reported percentage of females in the labor force of EU (European Union) countries.
How many employment records should be sampled?

A) 121
B) 269
C) 451
D) 382
E) 1681