\"Do you believe this policy is necessary? \"To get the answers from people, sup

Question

"Do you believe this policy is necessary? "To get the answers from people, suppose you did a survey and asked n = 120 people. They were asked to state their opinion on a 5 point scale regarding the question. The following is your survey result. a) Assume there is no difference in the proportions of people with different opinion, find the expected values in each category. b). Calculate the Chi-square value. c). What is the degree of the Chi-square value? d). Can we believe at alpha = 0.05 that there is no difference in the proportions of people with different opinion?

Explanation / Answer

a)

b)chi square =1.9333

c)degree of freedom =4-1=3

d)as for above p value =0.5864 which is higher then 0.05 level we can not reject that there is no differnece in the proportion of people with different opinion

observed Expected Chi square Attitude Probability O E=total*p =(O-E)^2/E strongly disagree 0.250 35.000 30.00 0.83 Disagree 0.250 28.000 30.00 0.13 Agree 0.250 25.000 30.00 0.83 strongly agree 0.250 32.000 30.00 0.13 1 120 120 1.9333

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