Mathematics, 25.12.2019 17:31 tokuichi3135
Some scientists believe alcoholism is linked to social isolation. one measure of social isolation is marital status. a study of 280 adults is conducted, and each participant is classified as not alcoholic, diagnosed alcoholic, or undiagnosed alcoholic, and also by marital status.
diagnosed alcoholic undiagnosed alcoholic not alcoholic
married 21 37 58
not married 59 63 42
is there significant evidence of an association? run the appropriate test at the 5% level of significance.
1. write out the appropriate null hypothesis and the alternative hypothesis.
2. what is the appropriate test statistic that needs to be calculated?
3. calculate and report the appropriate test statistic. to get full credit, you must show your work.
4. decide to either fail to reject the null hypothesis or reject the null hypothesis, and describe the result and the statistical conclusion in an understandable way.
Answers: 3
Mathematics, 21.06.2019 17:30
Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income
Answers: 3
Mathematics, 21.06.2019 20:30
What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi
Answers: 1
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