The following table shows the number of individuals in a sample of 450 who indicated they support the new tax proposal. We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed. The expected frequency for each group is
A) .333.
B) .50.
C) 150.
D) 135.

Question

The following table shows the number of individuals in a sample of 450 who indicated they support the new tax proposal.  ​ We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed. The expected frequency for each group is
A) .333. 
B) .50. 
C) 150. 
D) 135.

Quizplus · Accepted Answer

The expected frequency for each group in a uniform distribution would be the same. Since there are three groups and a sample size of 450, the expected frequency for each group would be 450/3 = 150. Therefore, the answer is C.

The Following Table Shows the Number of Individuals in a Sample