Concept explainers
Simulate the chance experiment described in the previous exercise using five slips of paper, with two marked defective and three marked not defective Place the slips in a box, mix them well, and draw out two. Record the number of defective boards. Replace the slips and repeat until you have 50 observations of the value x. Construct a relative frequency distribution for the 50 observations, and compare this with the probability distribution obtained in the previous exercise.
7.14 Suppose that a computer manufacturer receives computer boards in lots of five. Two boards are selected from each lot for inspection. We can represent possible outcomes of the selection process by pairs. For example, the pair (1,2) represents the outcome where Boards 1 and 2 are selected for inspection.
- a. List the 10 different possible outcomes.
- b. Suppose that Boards 1 and 2 are the only defective boards in a lot of five. Two boards are to be chosen at random. Define x to be the number of defective boards observed among those inspected. Find the probability distribution of x.
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Chapter 7 Solutions
INTRODUCTION TO STATISTICS & DATA ANALYS
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