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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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ang359 ang359
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4 months ago
Use the following to answer the questions below:

A professor with a large introductory statistics class noticed that nearly half of his students missed class the day before a long break (like Thanksgiving Break or Spring Break). He randomly called on students and found 10 students in attendance and 10 students who had skipped class. Later in his office, he examined the current course grades for the 20 students he had selected. A plot of his findings and summary statistics are provided. Note that the grades were entered as proportions, and thus a grade of 0.925 is a 92.5% in the course.

​n​s
Attending100.86690.0765
Not Attending100.78110.0805

 


Test, at the 5% level, if there is evidence that students who attended class before break have, on average, a significantly higher course grade than those who skipped. Include all of the details of the test.
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
Authors:
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vicky12345vicky12345
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ang359 Author
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4 months ago
Thanks
smdavis
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Yesterday
Helped a lot
njn;l
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2 hours ago
You make an excellent tutor!
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