Your statistics instructor claims that 60 percent of the stu

Your statistics instructor claims that 60 percent of the students who take an Elementary Statistics class go through life feeling more enriched. For some mysterious reason, most people don’t believe this. You decide to check this out on your own. You randomly survey 60 former Elementary Statistics students and find that 40 feel more enriched as a result of the class. z=

Solution

Test Statistic
No. of students feel more enriched (x)=40
Number of objects in a sample provided(n)=60
No. Of Success Rate ( P )= x/n = 0.667
Success Probability ( Po )=0.6
Failure Probability ( Qo) = 0.4
we use Test Statistic (Z) for Single Proportion = P-Po/Sqrt(PoQo/n)
Zo=0.66667-0.6/(Sqrt(0.24)/60)
Zo =1.054