OpenStax, Introductory Business Statistics 2e §6.3 Estimating the Binomial with the Normal Distribution · Exercise 43 · Statistics · Normal distribution
Estimating the Binomial with the Normal Distribution · Exercise 43
Historically, a final exam in a course is passed with a probability of 0.9. The exam is given to a group of 70 students.
(a) What is the mean of the binomial distribution?
(b) What is the standard deviation?
(c) Can this binomial distribution be approximate with a normal distribution?
(d) If so, use the normal distribution to find the probability that at least 60 of the students pass the exam?
OpenStax, Introductory Business Statistics 2e · §6.3 Estimating the Binomial with the Normal Distribution · Exercise 43
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