Mathematics, 24.02.2020 18:28, sandeebassett3
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2863 occupants not wearing seat belts, 33 were killed. Among 7609 occupants wearing seat belts, 15 were killed. Use a 0.05 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative hypotheses for the hypothesis test? A. Upper H 0: p 1equalsp 2 Upper H 1: p 1less thanp 2 B. Upper H 0: p 1equalsp 2 Upper H 1: p 1greater thanp 2 C. Upper H 0: p 1greater than or equalsp 2 Upper H 1: p 1not equalsp 2 D. Upper H 0: p 1equalsp 2 Upper H 1: p 1not equalsp 2 E. Upper H 0: p 1not equalsp 2 Upper H 1: p 1equalsp 2 F. Upper H 0: p 1less than or equalsp 2 Upper H 1: p 1not equalsp 2
Answers: 1
Mathematics, 21.06.2019 16:00, lil8174
Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.
Answers: 3
Mathematics, 21.06.2019 19:30, jessnolonger
Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?
Answers: 1
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2863 occup...
Mathematics, 01.09.2019 13:30
Mathematics, 01.09.2019 13:30
History, 01.09.2019 13:30
Mathematics, 01.09.2019 13:30
Health, 01.09.2019 13:30