Suppose an educational television station has broadcast a series of programs on
ID: 3179982 • Letter: S
Question
Suppose an educational television station has broadcast a series of programs on the physiological and psychological effects of smoking marijuana Now that the series is finished, the station wants to see whether the citizen within the viewing area have changed their minds shout how the possession of marijuana should be considered legally. Before the series was shown, it was determined that 7% of t he citizens favoured legalization. 18% favoured decriminalization, 65% favour the existing law (an offender could be fined or imprisoned), and 10% had no opinion. A summary of the opinions (after the serves was shown) of a random sample of 500 people in the viewing area is given in the below table. Test at the alpha = 0.01 level to see whether these data indicate that the distribution of opinions differs significantly from the proportions that existed Wore the educational aeries was aired.Explanation / Answer
applying chi square goodness of fit test on above:
for above chi stat and 3 degree of freedom p value =0.0041
as p value is greater then 0.01 hence we can not reject that distribution is same as before
observed Expected Chi square P O E=total*p =(O-E)^2/E legalization 0.07 39 35 0.46 Descrimination 0.18 99 90 0.90 Existing Laws 0.65 336 325 0.37 No opinion 0.10 26 50 11.52 500 500 13.25