In 2017, Americans spent a record-high $9.1 billion on Halloween-related purchases (the balance website). Sample data s adults spent on a Halloween costume are as follows. 14 66 23 64 36 39 30 42 53 16 16 99 42 35 65 26 a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)? 24 b. What is the sample standard deviation (to 2 decimals)? 24 c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Hallow Table 11.1.

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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 she
adults spent on a Halloween costume are as follows.
14
66
23
64
36
39
30
42
53
16
16
99
42
35
65
26
a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)?
24
b. What is the sample standard deviation (to 2 decimals)?
24
c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Hallowe
Table 11.1.
24
0= Icon Key
Exercise 11.07 Algo (Inferences About a Population Variance)
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Transcribed Image Text:Save 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 she adults spent on a Halloween costume are as follows. 14 66 23 64 36 39 30 42 53 16 16 99 42 35 65 26 a. What is the estimate of the population mean amount adults spend on a Halloween costume (to 2 decimals)? 24 b. What is the sample standard deviation (to 2 decimals)? 24 c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Hallowe Table 11.1. 24 0= Icon Key Exercise 11.07 Algo (Inferences About a Population Variance) Save
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