Concept explainers
(a)
To Explain: the shape of the sampling distribution of
(a)
Answer to Problem 64E
Skewed to the left
Explanation of Solution
The population distribution is skewed to the left.
Centre limit theorem: If the
(b)
To Explain: the shape of the sampling distribution of
(b)
Answer to Problem 64E
Approximately normal
Explanation of Solution
The population distribution is skewed to the left.
Centre limit theorem: If the sample size is equal to 30 or more, then the sampling distribution of the sample mean
Since the sample size of 50 is more than 30, it can be used the central limit theorem and therefore the sampling distribution of the sample mean is about normal.
Chapter 7 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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