It is said that happy and healthy workers are efficient and productiveA company that manufactures exercising machines wanted to know the percentage of large companies that provide on-site health . A...

It is said that happy and healthy workers are efficient and productiveA company that manufactures exercising machines wanted to know the percentage of large companies that provide on-site health . A sample of 240 such companies showed that 98 of them provide such facilities on site Construct a 99% confidence interval for the percentage of all such companies that provide such facilities on site What is the margin of error for this estimate?