The expected value ( mean) of the sample proportion is 50 that is shown in a step-by-step manner.
Step: 1
21- It is claimed that 25 % of students who take Algebra get
an A in the course. i.e., = 0.25
If a random sample of =200 students is selected.
The expected value ( mean) of the sample proportion
= n x p
= 0.25*200
= 50
An average of n numbers computed by adding some function of the numbers and dividing by some function of n.
The expected value ( mean) of the sample proportion is 50.
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