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IncorrectQuestion 3?

If?H0?is true, then the probability of rejecting?H0?is limited by ____.

?? Power? ?? 1?-?power ?? alpha? ?? beta?

IncorrectQuestion 4?

Exhibit 11-1

You are considering testing a new drug that is supposed to facilitate learning in mentally retarded children. Because there is relatively little known about the drug, you plan to use a nondirectional alternative hypothesis. Since your resources are limited, you can test only 15 subjects. The subjects will be run in a repeated measures design and the data will be analyzed with the sign test, using?a?= 0.05?2 tail.

Refer to Exhibit 11-1. If the drug has a moderate effect on learning such that?Preal?= 0.70, what is the probability you will detect the effect when doing your experiment.

?? 0.2968? ?? 0.0176? ?? 0.2969? ?? 0.0352?

Question 5?

You are considering testing a new drug that is supposed to facilitate learning in mentally retarded children. Because there is relatively little known about the drug, you plan to use a nondirectional alternative hypothesis. Since your resources are limited, you can test only 15 subjects. The subjects will be run in a repeated measures design and the data will be analyzed with the sign test, using?a?= 0.05?2 tail.

Refer to Exhibit 11-1. What is the probability of a Type II error?

?? 0.7032? ?? 0.7031? ?? 0.9824? ?? 0.9648?

Question 7?

In the case of?N?= 3,?Preal?= 0.90,?a?= 0.051 tail, using the sign test, the power is ____.

?? 1.0000? ?? 0.1250? ?? 0.8750? ?? 0.0000?

Question 9?

If?N?= 4,?Preal?= 0.80 in the direction predicted, and?a?= 0.051 tail, using the sign test, the power is ____.

?? 0.9375? ?? 0.0000? ?? 1.0000? ?? 0.0625?

IncorrectQuestion 10

?If beta = 0.7500, what is the power of the experiment?

?? 0.7500? ?? 0.5000? ?? 0.2500? ?? 1.0000?

Question 11?

Assume that you have conducted an experiment and the tail probability for the results you obtained was 0.0900 and?a?= 0.05. You can conclude ____.

?? the independent variable has no effect? ?? the independent variable has a weak effect? ? you were unable to detect an effect of the independent variable with your experiment ?? the null hypothesis is false

IncorrectQuestion 12 ?Truth demands that scientists set ____.

?? alpha equal to 0.05? ?? alpha equal to 0.01? ?? alpha equal to 0.03? ? not necessarily?a?= 0.01 or 0.05 or 0.03, but use their best judgment

Question 14?

A real effect of the independent variable is defined as ____.

? all possible effects including no change in the dependent variable ?? any effect that produces a change in the dependent variable? ? an effect that produces an increase in the value of the dependent variable ?? an effect showing no change in the dependent variable?

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