The current no-smoking regulations in office buildings require workers who smoke to take breaks and leave the building in order to satisfy their habits. A study indicates that such workers average 32...


















































































































































































































































































































































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The current no-smoking regulations in office buildings require workers who smoke to<br>take breaks and leave the building in order to satisfy their habits. A study indicates that such workers<br>average 32 minutes per day taking smoking breaks. The standard deviation is 8 minutes. To help<br>reduce the average break, rooms with powerful exhausts were installed in the buildings. To see<br>whether these rooms serve their designed purpose, a random sample of 110 smokers was taken. The<br>total amount of time away from their desks was measured for 1 day. Test to determine whether there<br>has been a decrease in the mean time away from their desks. Compute the p-value and interpret it<br>relative to the costs of Type I and Type II errors. Use a 5% significance level for all tests.<br>

Extracted text: The current no-smoking regulations in office buildings require workers who smoke to take breaks and leave the building in order to satisfy their habits. A study indicates that such workers average 32 minutes per day taking smoking breaks. The standard deviation is 8 minutes. To help reduce the average break, rooms with powerful exhausts were installed in the buildings. To see whether these rooms serve their designed purpose, a random sample of 110 smokers was taken. The total amount of time away from their desks was measured for 1 day. Test to determine whether there has been a decrease in the mean time away from their desks. Compute the p-value and interpret it relative to the costs of Type I and Type II errors. Use a 5% significance level for all tests.

Jun 10, 2022
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