Concept explainers
(a)
To find: The following sample is random. If non-random then explain.
(a)
Answer to Problem 2.2E
The explanation is given below.
Explanation of Solution
Given:
The condition is given as:
A
The sample is given as:
Twenty names are drawn from a box containing all the students’ names, each written on a separate slip of paper.
A random sample is a sample in which each elements is equally likely and the selection of each elements is independent. The given sample is an example of random sample.
(b)
To find: The following sample is random. If non-random then explain.
(b)
Answer to Problem 2.2E
The explanation is given below.
Explanation of Solution
Given:
The condition is given as:
A
The sample is given as:
One name is selected at random from a roster of all the students. The remaining selections are made by picking every
It is non-random because the selection is done based on the first candidate that selected which violates the condition of random variable in which selection of each elements is independent.
Chapter 15 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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