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 $58. The population standard deviation for a one-hour session is $5.5. a. What assumptions about the population should we be willing to make if a margin of error is desired? b. Using 90% confidence, what is the margin of error (to 2 decimals)? c. Using 99% confidence, what is the margin of error (to 2 decimals)?
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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 $58. The population standard deviation for a one-hour session is $5.5.
a. What assumptions about the population should we be willing to make if a margin of error is desired?
b. Using 90% confidence, what is the margin of error (to 2 decimals)?
c. Using 99% confidence, what is the margin of error (to 2 decimals)?
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