A company finds that 74% of applicants for a job do not have the required qualifications.How many applications should they expect to read before finding a suitably qualified applicant?
A)0.26
B)74
C)3.85
D)0.74
E)1.35

Question

Quizplus · Accepted Answer

We can use the formula for expected value:
E(X) = 1/p
where p is the probability of finding a suitably qualified applicant, which is 1 - 0.74 = 0.26.
So, E(X) = 1/0.26 = 3.85. Therefore, the company should expect to read 3.85 applications before finding a suitably qualified applicant.

A Company Finds That 74% of Applicants for a Job