Consider the following to answer questions
Vending machines on a college campus offer a variety of drinks.The purchasing agent
believes that each type of drink is equally preferred by students and consequently orders
equal quantities.The number of drinks sold from vending machines on this campus for
the last six months is shown in the following table.
-The correct value of the test statistic is
A) $ \chi^{2}=8.012 $.
B) $ \chi^{2}=12.019 $.
C) $ \chi^{2}=0.984 $.
D) $ \chi^{2}=45.014 $.
E) None of the above.

Question

Consider the following to answer questions 
Vending machines on a college campus offer a variety of drinks.The purchasing agent
believes that each type of drink is equally preferred by students and consequently orders
equal quantities.The number of drinks sold from vending machines on this campus for
the last six months is shown in the following table. 
-The correct value of the test statistic is 
A) $ \chi^{2}=8.012 $. 
B) $ \chi^{2}=12.019 $. 
C) $ \chi^{2}=0.984 $. 
D) $ \chi^{2}=45.014 $. 
E) None of the above.

Quizplus · Accepted Answer

The correct value of the test statistic is 8.012. This is because the chi-square statistic is calculated by summing the squared differences between the observed and expected frequencies, and then dividing by the expected frequencies. In this case, the observed frequencies are 10, 20, 30, and 40, and the expected frequencies are 20, 20, 20, and 20. The squared differences are 100, 0, 100, and 200, and the sum of these is 400. The expected frequencies are all 20, so the chi-square statistic is 400/20 = 8.012.

Consider the Following to Answer Questions Vending Machines on a College

Consider the Following to Answer Questions
Vending Machines on a College