Studies show that massage therapy has a variety of healthbenefits and it is not too expensive. A sample of 11 typicalone-hour massage therapy sessions showed an average charge of $58.The population standard deviation for a one-hour session is σ =$5.1
a. What assumptions about the population shouldwe be willing to make if a margin of error is desired?
- (The population has uniform distribution / The population isat least approximately normal is required / The population hasexponentional distribution / No assumptions should be made)
b. Using 90% confidence, what is the margin oferror (to 2 decimals)?
c. Using 95% confidence, what is the margin oferror (to 2 decimals)?
