(See Solution) According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A
Question: According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxpayers and finds the standard deviation of the time to prepare, copy, and electronically file for 1040 is 80 minutes.
- What assumption or assumptions do you need to make about the shape of the Population?
- What is the standard error of the mean in this example?
- What is the likelihood the sample mean is greater than 320?
- What is the likelihood the sample mean is between 320 and 350 minutes?
- What is the likelihood the sample mean is greater than 350 minutes?
Deliverable: Word Document 
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