Q 125

The student body of a large university consists of 30% Business majors. A random sample of 20 students is selected.
a.Define the random variable in words for this experiment.
b.What is the probability that among the students in the sample at least 10 are Business majors?
c.What is the probability that at least 16 are not Business majors?
d.What is the probability that exactly 10 are Business majors?
e.What is the probability that exactly 12 are not Business majors?

Q 126

A local university reports that 3% of their students take their general education courses on a pass/fail basis. Assume that fifty students are registered for a general education course.
a.Define the random variable in words for this experiment.
b.What is the expected number of students who have registered on a pass/fail basis?
c.What is the probability that exactly five are registered on a pass/fail basis?
d.What is the probability that more than three are registered on a pass/fail basis?
e.What is the probability that less than four are registered on a pass/fail basis?

Q 127

Twenty-five percent of all resumes received by a corporation for a management position are from females. Fifteen resumes will be received tomorrow.
a.Define the random variable in words for this experiment.
b.What is the probability that exactly 5 of the resumes will be from females?
c.What is the probability that fewer than 3 of the resumes will be from females?
d.What is the expected number of resumes from women?
e.What is the variance of the number of resumes from women?