Hi everyone,

Could someone please help me on these two problems?

A 95% confidenceinterval for the mean price of apartments is 752 to 798. Assume this result is based on a sample size of 100 and that the researchers knew the population standard deviation.

c. What is the margin of error for this confidence interval?

d. what is the value of the population standard deviation used to form this confidence interval?

Could someone please explain to me how to do these problems?

Thank you very much