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Data set 14 "Oscar Winner Age " in Appendix B lists ages of actresses when...

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Data set 14 "Oscar Winner Age " in Appendix B lists ages of actresses when they won Oscars, and the summary statistics are n=87, x= 36.2 years, and s=11.5 years. Use a 0.01 significance level to test the claim that the mean age of actresses when they win Oscars is greater than 30 years.

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