Please use the skills you learned in section 9.2 for thisassignment. For this activity, you will be creating a confidenceinterval for the average number of hours of TV watched. Lastsemester, my MAT 152 online students asked the question, “How manyhours of screen time do you have in a typical week?” Please use thedata they collected to answer the following questions. Data: 21, 2,28, 30, 18, 21, 25, 20, 25, 14, 21, 25, 50, 39, 46, 20, 35, 45, 37,46

What is the margin of error?

Here is the full question:

lease use the skills you learned in section 9.2 for thisassignment.

For this activity, you will be creating a confidence intervalfor the average number of hours of TV watched. Last semester, myMAT 152 online students asked the question, “How many hours ofscreen time do you have in a typical week?” Please use the datathey collected to answer the following questions.

Data: 21, 2, 28, 30, 18, 21, 25, 20, 25, 14, 21, 25, 50, 39, 46,20, 35, 45, 37, 46

1. Are there any outliers in this data set?
2. What calculator test (1-PropZInt, Z-Interval, or T-Interval),Excel, or StatCrunch function will you use to find the confidenceinterval?
3. Why do you use this test (and not one of the other 2tests)?
4. Using a 95% confidence level, what is the confidenceinterval?
5. What is the point estimate for the population mean?
6. What is the margin of error?
7. Suppose you knew the standard deviation for all Americans'screen time was 4 hours. If you wanted your results to be within amargin of error of 0.25 hours, how many people would you have tosurvey (use a 95% confidence level)?
8. Name at least 2 ways this data could be biased and hence theconfidence interval would not be a good estimate of the populationmean.

Your final write-up should number (1-8) your answers to eachquestion as well as an explanation of how you arrived at theanswers. For example, please include what calculator functions orcomputations you are using to arrive at the confidenceinterval.