Question

2: find expected value of vaccinated and diseased

3: expected value for not vaccinated and diseased

4: find test statistic

5:find degrees of freedom

6: find critical value

7: make decision to reject or fail

8: state conclusion of test

- Save & Exit Certify Lesson: 10.7 Chi-Square Test for Association DAGNY HEINSOHN Question 3 of 3, Step 2 of 8 15/24 Correct A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 333 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Vaccinated 37 102 Not Diseased Total 65 Not Vaccinated 86 145 231 333 Total 151 182 Copy Data Step 2 of 8: Find the expected value for the number of subjects who are vaccinated and are diseased. Round your answer to one decimal place. Answer How to enter your answer Tables il Keypad Keyboard Shortcu Previous Step Answer Ved and med Submit Answer 2020 Hawkes Learning

Answer 1

Ans: Hei VacConation and do seased status are not related VacConation and disease status are Ha related. 2 Expected value How total & column total Grand Total E Va Clonated and diseased 102x151 = (46.3 333 3 E 23lx 151 not Vallonated and diseased 104.8 333 Expected values are, Diseased not diseased Ital VacConation Status 55.8 102 46.3 126.3 231 Vacconated Not vaccorated Total 104.8 333 182 151 Test Statistic (2x²) = { /(0-1) ) = 120.043 Degree free of freedom = (-D (C-1)=(2-1) x (2-1)

= 3.842 0.05 ) a critical value = x²005, Since x>x² had refect the null hypothesis 8) There is enough evidence to onclude that Vaccination and dosease status are related.