I need help analyzing and computing the data found in the attached spreadsheet. 11.1

Americans spend nearly $7 billion on Halloween costumes and decorations. Sample data showing the amount, in dollars, 16 adults spent on a Hallowee costume are contained in the Excel Online le below. Construct a spreadsheet to answer the following questions. Open spreadsheet a. What is the point estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)? 3;: b. What is the sample standard deviation (to 2 decimals)? 25: c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume (to 2 decimals 53:99:]