se the following information to answer the next three questions. Women were stud

Question

se the following information to answer the next three questions. Women were study about the efficacy of calcium and vitamin D supplementation im preventins fractures in healthy recruited for a postmenopausal women. Below is the breakdown by major ethnic group of the ethnicity is known, along with the percent of individuals from each ethnicity in the subj ects whose general American population. Assume 5% level of significance. Ethnicity White Black Hispanic Asian or Pacific Islander Native American Total Percent in U.S Count in the study 30,153 3.317 1,507 722 749 36,448 75.6% 10.8% 9, 1 % 3.8% 0.7% 100% (4 points) To answer whether this study was representative of the American population, a Chi- square test is conducted using the null hypothesis that this study matched the ethnic diversity of the American population. What will the null and alternative hypotheses be? (a) Ho: pi 2, p2 .2, ps .2, pa 2, ps-2 6. (b) Ho: At least one proportion differs from what is expected (c) Ho: pi .756, p2 = .108, p,-.091 , p.-.038, ps = .007 (d) Ho: pi = .827, p2 = .09, p,-.04, p4 = .02, ps = .02 (e) Ho: At least one proportion differs from what is expected. HA: At least one proportion differs from what is expected HA: p,-.756, p2 = .108, p,-.091, p.-.038, ps = .007 HA: At least one proportion differs from what is expecte HA: At least one proportion differs from what is expected. Ha: pi = .827, p,-09, p3-04, p.-.02, ps .02 7. (4 points) Under this null hypothesis, what would be the expected breakdown participants by major ethnic groups (in the order: White; Black; Hispanic, Asia Islander; Native American)? (a) 75.6; 10.8; 9.1;3.8; 0.7 (b) 75,600; 10,800; 9,100; 3,800; 700 (c) 30,153; 3,317; 1,507; 722; 749 (d) 9112;9112; 9112; 9112; 9112 (e) 27554.7; 3,936.4; 3,316.8; 1,385.0; 255.1

Explanation / Answer

6)option C is correct

7)

for expected value =proportion *total number in population

hence option E is correct

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