Question

Do male and female servers at Swank Bar work the same number of hours? A sample of 45 female servers worked an average of 28 hours per week, with a standard deviation of 2. A sample of 45 male servers worked an average of 26 hours per week, with a standard deviation of 3.


Let μ1and μ2 represent the typical number of hours worked by all female and male servers at Swank Bar, respectively. Estimate with a 86% confidence level how many more hours female servers work. Round answers to the nearest hundredth.
< μ1−μ2 <

Which of the following does your data suggest?

• Female and male servers work about the same number of hours
• Female servers work more hours
• Male servers work more hours

Answer 1