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Question 11 Exhibit 8-3 Assume you are rolling two fair dice once. Refer to Exhibit 8-3. The probability of obtaining a sum of 5 equals ____.

0.3333

0.0228

0.1111

0.0556

Question 12 Exhibit 8-3 Assume you are rolling two fair dice once. Refer to Exhibit 8-3. The probability of obtaining a sum of 2 or 12 equals ____.

0.0228

0.3333

0.0833

0.0556

Question 13 Exhibit 8-3 Assume you are rolling two fair dice once. Refer to Exhibit 8-3. The probability of obtaining at least one 3 or one 4 equals ____.

0.3333

0.5556

0.1111

0.0833

Question 14 Which of the following are examples of mutually exclusive events?

rain and a cloudless sky

snow and a temperature of 10Celsius

walking and running at the same time

all of the other three choices

Question 15 If a stranger gives you a coin and you toss it 1,000,000 times and it lands on heads 600,000 times, what isp(Heads) for that coin?

0.5000

0.6000

0.4000

0.0000

Question 16 The statistic used in the sign test measures ____.

the difference between the means of the two groups

the direction of the differences between pairs of scores

the magnitude of the differences between pairs of scores

the difference between the variance of the two groups

Question 17 lf alpha is changed from 0.05 to 0.01, ____.

the probability of a Type II error decreases

the probability of a Type I error increases

the error probabilities stay the same the probability we will retain a falseH0increases

the probability we will retain a falseH0increases

Question 18 The null hypothesis which is appropriate for a directional alternative hypothesis asserts that ____.

the independent variable has had no effect

chance alone is responsible for the differences between conditions

the independent variable does not have an effect in the direction predicted byH1

it cannot be determined whether the independent variable has had an effect

Question 19 If alpha equals 0.05 and the probability level of your experiment is 0.04, you would ____.

reject the null hypothesis

retain the null hypothesis

accept the null hypothesis

redo the experiment

Question 20 When the results of an experiment are nonsignificant, the proper conclusion(s) is (are) ____.

the experiment fails to show a real effect for the independent variable

chance alone is at work

acceptH0

acceptH1