Mathematics, 17.04.2020 21:13, jholland03
The U. S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites born in 1900 and 33.0 years for nonwhites. Suppose that you randomly survey death records for people born in 1900 in a certain county. Of the 124 whites, the mean life span was 45.3 years with a standard deviation of 12.7 years. Of the 82 nonwhites, the mean life span was 34.1 years with a standard deviation of 15.6 years. Conduct a hypothesis test to see if the mean life spans in the county were the same for whites and nonwhites.
(a) State the null and alternative hypotheses. (Let w = white, and nw = nonwhite.)
i. H0: μw = μnw Ha: μw > μnw
ii. H0: μw ≠ μnw Ha: μw = μnw
iii. H0: μw = μnw Ha: μw ≠ μnw
iv. H0: μw = μnw Ha: μw < μnw
Answers: 3
Mathematics, 21.06.2019 17:30, queenpaige2015
How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !
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Mathematics, 21.06.2019 19:40, Suzispangler2264
What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?
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The U. S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites...
Mathematics, 12.06.2020 00:57
Mathematics, 12.06.2020 00:57