In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance website, https://www.thebalance.com /halloween-spending-statistics-facts-and-trends-3305716). Sample
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In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance website, https://www.thebalance.com /halloween-spending-statistics-facts-and-trends-3305716). 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?
b. What is the sample standard deviation?
c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume.
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Related Book For 
Statistics For Business & Economics
ISBN: 9781337901062
14th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
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