ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 179 - 182 of 253
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Question number: 179
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
In a college survey, children were asked how many hours they study per day. A sample of 22 children is collected. The mean was 3.25 hours with a standard deviation of 1.57 hours. Then 95 % and 99 % confidence interval for the number of hours of study per day is
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| Choice (4) | Response | |
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| a. | and |
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| b. | and |
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| c. | and |
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| d. | Question does not provide sufficient data or is vague |
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Question number: 180
» Statistical Inference and Hypothesis Testing » Sufficient Estimator
Question
A statistic is called as ________ Estimator for the parameter θ, if the conditional distribution of given T does not depend on θ.
Choices
| Choice (4) | Response | |
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| a. | Sufficient |
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| b. | Maximum Likelihood estimator |
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| c. | Efficient |
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| d. | Unbiased |
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Question number: 181
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
A survey of 200 factory workers provides a sample mean of 7.10 hours worked. What is the 95 % confidence interval based on this sample. Calculated standard deviation is 5 hours.
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| b. |
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| c. |
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| d. | Both b. and c. are correct |
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Question number: 182
» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation
Question
The 99 % confidence interval for of the normal population is given by
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| a. |
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| b. |
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| c. |
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