Exhibit 12-6
The following shows the number of individuals in a sample of 300 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.
-In 2012, forty percent of the students at a major university were Business majors, 35% were Engineering majors and the rest of the students were majoring in other fields. In a sample of 600 students from the same university taken in 2013, two hundred were Business majors, 220 were Engineering majors and the remaining students in the sample were majoring in other fields. At a 5% significance level, test to see if there has been a significant change in the proportions between 2012 and 2013.

Question

Exhibit 12-6
The following shows the number of individuals in a sample of 300 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.
-In 2012, forty percent of the students at a major university were Business majors, 35% were Engineering majors and the rest of the students were majoring in other fields. In a sample of 600 students from the same university taken in 2013, two hundred were Business majors, 220 were Engineering majors and the remaining students in the sample were majoring in other fields. At a 5% significance level, test to see if there has been a significant change in the proportions between 2012 and 2013.

Quizplus · Accepted Answer

The Answer of Exhibit 12-6
The following shows the number of individuals in a sample of 300 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.
-In 2012, forty percent of the students at a major university were Business majors, 35% were Engineering majors and the rest of the students were majoring in other fields. In a sample of 600 students from the same university taken in 2013, two hundred were Business majors, 220 were Engineering majors and the remaining students in the sample were majoring in other fields. At a 5% significance level, test to see if there has been a significant change in the proportions between 2012 and 2013.

Exhibit 12-6 The Following Shows the Number of Individuals in a Sample