Q4) (8 points) A local health department is interested in the relationship betwe

Question

Q4) (8 points) A local health department is interested in the relationship between heroin use and risk for hepatitis C in their jurisdiction. After interviewing 5,498 people who reported using one or more illicit drugs regularly, the department determines that 107 out of 687 who indicating heroin use developed hepatitis C. Among the remaining 4811 individuals who indicated drug use other than heroin, 612 developed hepatitis C. Is there evidence of a significant difference in hepatitis C incidence? Run the appropriate hypothesis test to find out. Use = 0.05. 1) Hypotheses:

Explanation / Answer

Ho: heroin use and risk for hepatatis C are independent

Ha: not independent

b)

c) p-value = 0.0379

d) p-value < 0.05

we reject the null hypothesis and conclude that they are dependent

Please rate

hep. yes no total heroine yes 107 580 687 no 612 4199 4811 total 719 4779 5498 Oi 107 580 612 4199 Ei 89.84231 597.1577 629.1577 4181.842 TS (O--Ei)^2/Ei 3.276702 0.492979 0.467906 0.070396 4.307983 critical value 3.84 p-value 0.037933906

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