# STAT 100-Students took pictures of themselves squinting

Question # 00709850 Posted By: rey_writer Updated on: 08/08/2018 04:11 AM Due on: 08/08/2018
Subject Statistics Topic General Statistics Tutorials:
Question

Students took pictures of themselves squinting and another picture with their eyes wide open. The data were collected for the purpose of testing the null hypothesis that squinting didn't make a difference in the expected age guessed versus the alternative that squinting would make you look older. Forty-seven (n=47) students ages guessed by the computer averaged 3.64 years older when the students were squinting with a standard deviation of 12.87 years.

1.What is the standard error of the mean in this situation? Show your computations.

2.Find the test statistic (z-score) and then the p-value. Show your computations for the z-score and explain how you found the p-value.

What do you conclude?

(You should arrive at a p-value of about 2 or 3 percent indicating that the null hypothesis -- that squinting has no affect -- is a poor explanation of the data.)

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1. ## Solution: STAT 100-Students took pictures of themselves squinting

Tutorial # 00709729 Posted By: rey_writer Posted on: 08/08/2018 04:12 AM
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