Homework help needed on sampling distribution

timer Asked: Oct 16th, 2015

Question description

Suppose a waitress keeps track of her tips, as a percentage of the bill, for a random sample of tables.
a. Identify the observational units in this study.

b. Identify the variable in this study and Classify its type as categorical or quantitative.

Suppose that, unknown to the waitress, her population mean tip percentage is , with a standard deviation of .

c. Describe the sampling distribution of her sample mean tip percentage.

Round your answer for the standard deviation to three decimal places.

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