STATISTICAL TECHNIQUES AND TOOLS
CONFIDENCE INTERVALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In a recent study of 42 eighth graders, the mean number of hours per week that they watched television was19.6. Assume the population standard deviation is 5.8 hours. Find the 98% confidence interval for thepopulation mean.
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(14.1, 23.2)
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(18.3, 20.9)
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(17.5, 21.7)
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(19.1, 20.4)
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Explanation:
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