FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The standard IQ test has a mean of 96 and a standard deviation of 14. We want to be 99% certain that we are within 4 IQ points of the true mean. Determine the required sample size.
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82
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178
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10
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1
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Explanation:
Detailed explanation-1: -An IQ test is designed so that the mean is 100 and the standard deviation is 22 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95% confidence that the sample mean is within 5 IQ points of the true mean.
Detailed explanation-2: -IQ test scores are normally distributed with a mean of 105 and a standard deviation of 13. An individual’s IQ score is found to be 126.
There is 1 question to complete.