A professor claims that the final exam grades are more widely dispersed in Principles classes compared to upper-level classes. In a sample of 101 Principles final exams, the standard deviation is 16 while in a sample of 30 upper-level class final exams the standard deviation is 13. Test the hypothesis at the 10% level of significance that the 2 variances are different. Write all formulas and hypothesis.

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: Claim; μ>136mm                x=148                s=15

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: claim : μ < 130x¯ = 122s = 18     accept Ho Reject Ho Ho True correct conclusion Type I…

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Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

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