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In: Statistics and Probability

Studies show that massage therapy has a variety of health benefits and it is not too...

Studies show that massage therapy has a variety of health benefits and it is not too expensive. A sample of 11 typical one-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 should we be willing to make if a margin of error is desired?

- (The population has uniform distribution / The population is at least approximately normal is required / The population has exponentional distribution / No assumptions should be made)

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)?

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orchestra answered 1 year ago
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