4. Compute the test statistic and show it on your picture. The computation may be done on your calculator - write down your calculator program! 5. Make your comparison: We reject Ho / We do not reject Ho (circle one) 6. State the final conclusion in the wording of the problem.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Part 4, 5, 6

3. Netflix: A study conducted in 2015 by the technology company Rovi (now TiVo) showed
that the mean time spent per day browsing the video streaming service Netflix for
something to watch was 19.3 minutes. Assume the standard deviation is o = 8. Suppose
a simple random sample of 100 visits taken this year has a sample mean of 21.5 minutes.
A social scientist is interested to know whether the mean time browsing Netflix has
increased. Test the scientist's claim using a 0.05 significance level.
1. List the null and alternate hypothesis.
2. List the distribution (z or t) and all given variables used.
3. Find the critical value(s) using your calculator and label the picture. Draw a
picture!!
4. Compute the test statistic and show it on your picture. The computation may be
done on your calculator - write down your calculator program!
5. Make your comparison:
We reject Ho / We do not reject Ho (circle one)
6. State the final conclusion in the wording of the problem.
Transcribed Image Text:3. Netflix: A study conducted in 2015 by the technology company Rovi (now TiVo) showed that the mean time spent per day browsing the video streaming service Netflix for something to watch was 19.3 minutes. Assume the standard deviation is o = 8. Suppose a simple random sample of 100 visits taken this year has a sample mean of 21.5 minutes. A social scientist is interested to know whether the mean time browsing Netflix has increased. Test the scientist's claim using a 0.05 significance level. 1. List the null and alternate hypothesis. 2. List the distribution (z or t) and all given variables used. 3. Find the critical value(s) using your calculator and label the picture. Draw a picture!! 4. Compute the test statistic and show it on your picture. The computation may be done on your calculator - write down your calculator program! 5. Make your comparison: We reject Ho / We do not reject Ho (circle one) 6. State the final conclusion in the wording of the problem.
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