physiclans. The more than 5% ofus State the nul and alternative hypothees tate G

Question

physiclans. The more than 5% ofus State the nul and alternative hypothees tate Give the 95% Confidence Interval courtesy, physiclams have tradisonaly provided health care free of charge or other phernd their-in-94% sa plecfum 4. at a reduced rate to physicians offered thils professional courtesy. To assess changed over the years, The New England Journal of Medicine cone physicians of which 1957 he exent to which this practice has ed a survey of 2.224 , cumently offer tree or reduced-e helath care to ow hysicians with State the null and alternative bypothes's State your conclusion for your hvpothesis test. 4 points 5. In a study of drug usage, researchers surveyed the type ot drug fist injected by 102 subject with results as folows Heroin 42 Speed 36 Other 24 At alpha- .05, test that the probabilities for the three groups were equal.(1/3, 1/3, 1/3) o-E) Chl Squared Formula: x?= .lou State the null and alternative hypothesis State the observed values State the expected values Give a conclusion 4 points 4 points

Explanation / Answer

#5.
Below are the null and alternate hypothesis
H0: The probabilities for the three groups are equal
H1: The probabilities for the three groups are not equal

chi-square = 4.94 and df = 2

p-value = 0.0845

As p-value is greater than the significance level of 0.05, we fail to reject the null hypothesis. This means there are not significant evidence to conclude that probabilities are different from given values.

Observed Frequency (Oi) Expected Frequency (Ei) (Oi - Ei)^2/Ei 42 34 1.88 36 34 0.12 24 34 2.94 102 4.94

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.