A researcher is interested in testing whether college students send more or fewer texts per day, relative to the general population. The researcher finds out that the population average of texts sent per day is µ = 112, but is unable to find out the population standard deviation. This researcher then recruits 25 college students, and asks about their texting. They report a sample mean of M = 120, with a SS= 1200   Compute the sample variance s2=  ?

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A researcher is interested in testing whether college students send more or fewer texts per day, relative to the general population. The researcher finds out that the population average of texts sent per day is µ = 112, but is unable to find out the population standard deviation.

This researcher then recruits 25 college students, and asks about their texting. They report a sample mean of M = 120, with a SS= 1200

 

Compute the sample variance s2=  ?

AND WRITE THAT NUMBER DOWN. YOU WILL NEED IT FOR THE NEXT QUESTION

 
Expert Solution
Step 1

Given data

                    ư = 112,

                    sample size (n) = 25,

                    mean (M) = 120

                   SS = 1200

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