Concept explainers
To find: the distribution of z-score for that time is.
Answer to Problem T2.8SPT
Skewed to the right with
Explanation of Solution
The population distribution would be skewed to the right of a mean of 30 minutes and standard deviation of 15 minutes
The shape of the distribution of the z-scores is every time the same as the shape of the population distribution, which means that the z-scores have a skewed to the right distribution.
However, the z-score every time have mean zero and standard deviation is one, because the z-scores are the standardized version of the data values.
Hence, the correct option is (d)
Chapter 2 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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