Discuss the below:
Q1: A study was conducted to see if more than 60% of the American corporate work force felt that they were overdue for a promotion. A random sample of 1500 Americans currently working in a corporate atmosphere was taken. 855 said that they did feel that a promotion was overdue.
A 95% confidence interval for estimating the true percentage of the population that felt this way would have a margin of error to be?
Q2: Using the same info in italics, to reduce the margin of error to 2% and increase the confidence level to 99%, how many workers should be sample in a future study?