MATH 225N Week 6 Statistics Quiz
Harvard University
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MATH 225N Week 6 Statistics Quiz (MATH225N)
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---11december 20212021/2022A+
- Exam (elaborations) MATH 225N Week 6 Statistics Quiz (MATH225N) 
Question 1 
A statistics professor recently graded final exams for students in her introductory statistics course. In a review 
of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10. 
Construct a confidence interval for the mean score (out of 100 points) on the final exam. 
That is correct! 
Answer: (67, 87) 
Question 2 
A random sample of adults were asked whether they prefer readin...
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