Exercise 11.07 Algo (Inferences About a Population Variance) In 2017, Americans spent a record-high $9.1 billion...

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Exercise 11.07 Algo (Inferences About a Population Variance) In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance website). Sample data showing the amount, in dollars, 16 adults spent on a Halloween costume are as follows. 69 34 18 b. What is the sample standard deviation (to 2 decimals)? 11 30 52 48 33 a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)? 25 33 14 64 65 46 Question 3 of 14 Hint(s) Check My Work 98 23 c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume (to 2 decimals). Use Table 11.1. sass Exercise 11.07 Algo (Inferences About a Population Variance) In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance website). Sample data showing the amount, in dollars, 16 adults spent on a Halloween costume are as follows. 69 34 18 b. What is the sample standard deviation (to 2 decimals)? 11 30 52 48 33 a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)? 25 33 14 64 65 46 Question 3 of 14 Hint(s) Check My Work 98 23 c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume (to 2 decimals). Use Table 11.1. sass