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 19:00, legacieenglish
Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.
Answers: 1
Mathematics, 22.06.2019 00:20, jayleneeeee
The police chief wants to know if the city’s african americans feel that the police are doing a good job. identify the management problem (i. e dependent variable) and identify the independent variable.
Answers: 1
Mathematics, 22.06.2019 01:20, corbeansbrain
Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site
Answers: 1
Some scientists believe alcoholism is linked to social isolation. one measure of social isolation is...
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