Americans spend nearly 7 billion on Halloween costumes and decorations. Sample data showing the amount, in dollars, 16

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answerhappygod
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Americans spend nearly 7 billion on Halloween costumes and decorations. Sample data showing the amount, in dollars, 16

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Americans spend nearly 7 billion on Halloween costumes and decorations. Sample data showing the amount, in dollars, 16 adults spent on a Halloween costume are as follows.
a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)?
b. What is the sample standard deviation (to 2 decimals)?
c. Provide a confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume (to 2 decimals).
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