STATISTICAL TECHNIQUES AND TOOLS
SAMPLING DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The mean and standard deviation of a population are 200 and 20, respectively. What is the probability of selecting 25 data values with a mean less than 190?
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69%
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0.6%
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31%
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99%
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Explanation:
Detailed explanation-1: -The Sample size of the given data will be 25.
Detailed explanation-2: -Thus, for a sample of N = 25 and population standard deviation of s = 100, the standard error of the mean is 100/5 or 20.
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