STATISTICAL TECHNIQUES AND TOOLS
T DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sam uses a t-distribution to compute a 99% interval. How many trials would need to be in his sample in order to use the critical value of 2.878?
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2.576
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17
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18
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19
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Explanation:
Detailed explanation-1: -Upon using a t-table or a calculator, we see that the critical t-value for this 99% confidence interval is t0.005=2.581.
Detailed explanation-2: -Answer and Explanation: Confidence level is 99%. Sample size is 17. Hence, the critical value is 2.921, and option c. is correct.
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