I need help completing the statistical assignment below please.

Question a) answer drop box are:

• ook

a.What assumptions about the population should we be willing to make if a margin of error is desired?

- Select your answer -

The population has uniform distribution

The population is at least approximately normal is required

The population has exponentional distribution

No assumptions should be made

Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 10 typical one-hour massage therapy sessions showed an average charge of $61. The population standard deviation for a one-hour session is o = $5.5. a. What assumptions about the population should we be willing to make if a margin of error is desired? The population has uniform distribution b. Using 90% confidence, what is the margin of error (to 2 decimals)? c. Using 95% confidence, what is the margin of error (to 2 decimals)