Question

Fifteen percent of all students at a large university are absent on Mondays. If a random sample of 12 names is called on a Monday, what is the probability that four students are absent? (Use normal approximation to the binomial distribution to answer this question)

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5a)​A University found that 20% of the students withdraw without completing the introductory statistics course. Assume that 20 students registered for the statistics course. Que # 35 ASW text)

a) Compute the probability that two or fewer students will withdraw.

b) Compute the expected number of withdrawals.

5b).​In a large university, 20% of the students are business majors. A random sample of 100 students is selected, and their majors are recorded. What is the probability that the sample contains between 12 and 14 business majors?

Answer 1