# Statistics and Probability

## Find the upper confidence limit for parts a–c of Exercise 7.42.

Question: Find the upper confidence limit for parts a–c of Exercise 7.42. Answer:

## A shipment of 12 microwave ovens contains three defective units

Question: A shipment of 12 microwave ovens contains three defective units. A vending company has ordered four of these units, and because each is identically packaged, the selection will be random. What is the probability that (a) all four units are good, (b) exactly two units are good, and (c) at least two units are …

## A random sample of 150 residents in one community was asked to indicate their first preference for one of three

Question: A random sample of 150 residents in one community was asked to indicate their first preference for one of three television stations that air the 5 p.m. news. The results obtained are shown in the following table. Test the null hypothesis that for this population their first preferences are evenly distributed over the three …

## Assume that the offspring distribution is uniform on {0, 1, 2, 3, 4}

Question: Assume that the offspring distribution is uniform on {0, 1, 2, 3, 4}. Find the extinction probability. Answer:

## A binomial probability distribution…

Question: A binomial probability distribution is a continuous distribution (i.e., the x-variable is continuous). TRUE OR FLASE WHY Answer: False, in binomial, x = number of successes in n trials, which is clearly discrete variable as it takes integer values.