General Questions- Answer the following multiple choice questions (1-10). Type out your answer in the space provided, include both the letter and the selection.

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Scenario 1:
General Questions- Answer the following multiple choice questions (1-10). Type out your answer in the space provided, include both the letter and the selection.

  1. As the length of the confidence interval for the population mean increases, the degree of confidence in the interval’s actually containing the population mean_________________?

A Stay the same

B  Increases
C  Decreases
D  Doubles
Answer: _______________

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  1. What value of a correlation coefficient indicates that there is a perfect positive relationship between the dependent variable, y, and the independent variable, x?

Answer: ___________

  1. What value of a correlation coefficient indicates that there is no relationship between the dependent variable, y, and the independent variable, x?

Answer: ___________

  1. For a fixed level of confidence when the sample size increases, the length of the confidence interval for a population mean will______________?

A     Stay the same.
B     Increase.
C     Decrease.
D     Doubles.

Answer: ___________

  1. Which of the following confidence intervals will be the widest?

A     90 Percent.
B     95 Percent.
C     98 Percent.
D     80 Percent.

Answer: ___________

  1. The probability of failing to detect an effect when one exists is known as a:

A     Type II error.
B     Type I error.
C     Standard error.
D     Standardized erro.r

Answer: ___________

  1. Concluding that there is an effect when in reality no effect exists is known as a:

A     Type II error.
B     Type I error.
C     Standard error.
B     Type I error.

Answer: _________

  1. As the sample size increases, how is the power of the study affected?

A     It is not affected.
B     It is decreased.
C     It approaches zero.
D     It is increased.

Answer: ___________

  1. When a researcher decreases the risk of making a type 1 error, the risk of making a type II error is?

A     Decreased.
B     Not Affected.
C     Increased.
D     Equal to the chance of making a type I error.

Answer: ___________