Q 37

# The sample data below was tested to determine whether car colour is related to the likelihood of being in an accident. Test statistic: χ2 =34.38 P-value = 3.42 ×

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Q 36

The table below shows the age and favorite type of music of 668 randomly selected people.The data are to be used to compare the distribution of age for each music type.Use a 5% level of significance. = 12.954; P-value = 0.0115
A)Reject the null hypothesis and conclude that the age distribution is not the same for each type of music.
B)Do not reject the null hypothesis and conclude that the age distribution is the same for each type of music.
C)Do not reject the null hypothesis and conclude that the age distribution is not the same for each type of music.
D)Reject the null hypothesis and conclude that the age distribution is uniform for each type of music.
E)Reject the null hypothesis and conclude that the age distribution is the same for each type of music.

Q 38

In order to test a claim about the effectiveness of a flu vaccine,150 people were vaccinated,180 people were vaccinated with a placebo,and 100 people were not vaccinated.The number in each group who later caught the flu was recorded.The researcher wishes to test the claim that the proportion of people who catch the flu is the same for all three groups.The results are shown below. Test statistic: χ2 = 14.965
P-value = 0.0005627

Q 39

A researcher wishes to test whether the proportion of college students who smoke is the same in four different colleges.She randomly selects 100 students from each college and records the number that smoke.The results are shown below. Test statistic: χ2 = 17.832
P-value = 0.0004763