Sample Evaluation. The National Football League (NFL) is interested in determiningwhether the average age of its fan base is less than 35 years of age to identify this demographic for potential advertisers. Following are the results for three different stadiums forfans attending an NFL game on a given weekend. In all cases, assume a sampling risk of5 percent. Sample 1 Sample 2 Sample 3 Precision 5 3 8 Sample estimate 26 34 40 Required:a. Construct a precision interval for each of these samples.b. Given the sampling risk of 5 percent, provide a single-sentence summary of the results tothe NFL for each sample.c. What is your basic conclusion regarding each sample?d. If the NFL increased its acceptable level of sampling risk, how would that affect theprecision interval and your conclusions? If it decreased the acceptable level of samplingrisk, how would that affect the precision interval and your conclusions? Why?
Sample Evaluation. The National Football League (NFL) is interested in determining
whether the average age of its fan base is less than 35 years of age to identify this demographic for potential advertisers. Following are the results for three different stadiums for
fans attending an NFL game on a given weekend. In all cases, assume a sampling risk of
5 percent.
| Sample 1 | Sample 2 | Sample 3 | |
| Precision | 5 | 3 | 8 |
| Sample estimate | 26 | 34 | 40 |
Required:
a. Construct a precision interval for each of these samples.
b. Given the sampling risk of 5 percent, provide a single-sentence summary of the results to
the NFL for each sample.
c. What is your basic conclusion regarding each sample?
d. If the NFL increased its acceptable level of sampling risk, how would that affect the
precision interval and your conclusions? If it decreased the acceptable level of sampling
risk, how would that affect the precision interval and your conclusions? Why?
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