STATISTICAL TECHNIQUES AND TOOLS
T DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the right-tailed area if the confidence interval is 75%?
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0.05
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0.10
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0.005
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0.25
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Explanation:
Detailed explanation-1: -What is the value of when the level of confidence is 95 %? For a two-tailed 95% confidence interval, the alpha value is 0.025, and the corresponding critical value is 1.96.
Detailed explanation-2: -If we know that the mean of this sample data is 20, but do not know the values of any of the data, then there are 99 degrees of freedom. All values must add up to a total of 20 x 100 = 2000.
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