Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 16 typical o

[answerhappygod]

Studies show that massage therapy has a variety of health
benefits and it is not too expensive. A sample
of 16 typical one-hour massage therapy sessions
showed an average charge of $57. The population standard deviation
for a one-hour session is 𝜎 = $5.5.
Using 95% confidence, what is the margin of error in dollars?
(Round your answer to the nearest cent.)
Using 99% confidence, what is the margin of error in dollars?
(Round your answer to the nearest cent.)