(Solution) - Use the data in Example 1 and technology to construct -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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Use the data in Example 1 and technology to construct 75%, 85%, and 90% confidence intervals for the mean number of hours worked by grocery store employees. How does the width of the confidence interval change as the level of confidence increases?
Data in Example 1

a. Enter the data.
b. Use the appropriate command to construct each confidence interval.
c. Compare the widths of the confidence intervals for c = 0.75, 0.85, and 0.90.