MCQs > Crime & Justice > Criminal Justice And Criminology (Statistics) MCQs > Point Estimates and Confidence Intervals MCQs

Point Estimates and Confidence Intervals MCQ

Point Estimates and Confidence Intervals MCQ

 

1. _____ is known as a statistical test in which alpha is split in half and placed into both tails of the z or t distribution.

Answer

Correct Answer: Two-tailed test

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2. _____ is defined as a sample statistic, such as a mean or proportion.

Answer

Correct Answer: Point estimate

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3. _____ is the probability that a confidence interval contains the population parameter. Commonly set at 95% or 99%.

Answer

Correct Answer: Level of confidence

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4. Is critical value the value of z or t associated with a given alpha level. Symbolized zα or tα?

Answer

Correct Answer: True

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5. _____ is known as a range of values spanning a point estimate that is calculated so as to have a certain probability of containing the population parameter.

Answer

Correct Answer: Confidence interval

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6. _____ is defined as the opposite of the confidence level; that is, the probability that a confidence interval does not contain the true population parameter. Symbolized α.

Answer

Correct Answer: Alpha level

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7. How likely is it that a prediction will be wrong using a 95% confidence interval?

Answer

Correct Answer: 5%

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8. Which confidence interval has the best chance of being correct?

Answer

Correct Answer: 99% confidence interval

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9. Which of the following percentages are the typical confidence intervals in criminology/criminal justice research?

Answer

Correct Answer: 95–99%

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10. Which of the following statements defines the level of confidence?

Answer

Correct Answer: Is the probability a confidence interval contains the parameter

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11. Which of the following statements defines a point estimate?

Answer

Correct Answer: A little uncertainty in a sample statistic

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12. Which of the following statements are accurate concerning confidence levels for proportions?

Answer

Correct Answer: They employ the z distribution.

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13. The higher the confidence level the less?

Answer

Correct Answer: Precision a researcher has

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14. Which of the following statements describes the purpose of a confidence interval?

Answer

Correct Answer: To be able to make predictions with greater accuracy

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15. Confidence intervals are used with which of the following types of tests?

Answer

Correct Answer: One-tailed tests and two-tailed tests

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16. Confidence intervals can be constructed at which of the following levels?

Answer

Correct Answer: 95% and 99%

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17. Degrees of freedom are calculated using a z score.

Answer

Correct Answer: False

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18. Confidence intervals are calculated the same for all sample sizes.

Answer

Correct Answer: False

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19. Confidence intervals are set a priori (before) a calculation is made.

Answer

Correct Answer: True

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20. Z and t distributions can be used to construct confidence intervals.

Answer

Correct Answer: True

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21. A confidence interval resembles a positively skewed distribution.

Answer

Correct Answer: False

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Criminal Justice And Criminology (Statistics) MCQs | Topic-wise

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