(a)
To explain which statement is true.
(a)
Answer to Problem 7E
False.
Explanation of Solution
It is given that several factors are involved in the creation of a confidence interval. Among the mare the
(b)
To explain which statement is true.
(b)
Answer to Problem 7E
True.
Explanation of Solution
It is given that several factors are involved in the creation of a confidence interval. Among the mare the sample size, the level of confidence and the margin of error. Thus, we have that for a specified confidence level larger samples provide smaller margin of error. This statement is true because a larger sample size always reduces variability and allows for greater confidence.
(c)
To explain which statement is true.
(c)
Answer to Problem 7E
True.
Explanation of Solution
It is given that several factors are involved in the creation of a confidence interval. Among the mare the sample size, the level of confidence and the margin of error. Thus, we have that for a fixed margin of error, larger samples provide greater confidence. This statement is true because a larger sample size always reduces variability and allows for greater confidence.
(d)
To explain which statement is true.
(d)
Answer to Problem 7E
False.
Explanation of Solution
It is given that several factors are involved in the creation of a confidence interval. Among the mare the sample size, the level of confidence and the margin of error. Thus, we have that for a given confidence level, having the margin of error requires a sample twice as large. This statement is false because a larger sample size always reduces variability and allows for greater confidence.
Chapter 19 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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