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4) If you reject a null hypothesis and (in reality) there is a no difference between two groups, then you have: a) made a Type

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4) If you reject a null hypothesis and (in reality) there is a no difference between two groups, then you have: a) made a Type I error b) made a Type 11 error c) made a Type III error (I) not made an error at all 5) If you accept the null hypothesis and (in reality) there is a difference between two groups,then you have: a) made a Type I error b) made a Type 11 error 0) made a Type III error d) not made an error at all 6) If you accept the null hypothesis and (in reality) there is no difference between two groups, then you have: a) made a Type I error b) made a Type II error e) made a Type III error (1) not made an error at all 7) The degree of risk you are willing to take that you will reject a null hypothesis when it is actually true is called: a) experimenter error b) signicance level c) error level d) experimental level 8) As the size of your sample , the risk for a a) decreases / Type I error stays constant b) increases I Type I error decreases and type 11 error increases c) decreases I Type 11 error decreases d) increases / Type 11 error decreases 9) Another name for the test statistic value is: a) posttest value b) beta test value c) inferred value d) obtained value 10) Terrie Moftt, the author of the dual taxonomy theory, proposed that there is a group of offenders known as the life course persistent offenders who commit both frequent and serious offenses throughout their lives. Suppose you have a sample of 25 young males who have been in juvenile institutions at least twice. The mean age of their rst arrest was 12 and the standard deviation is 1.9. Construct a 95 percent condence interval around this point estimate. a) the intervals are 11.84 and 12.16 b) the intervals are 11.20 and 12.80 c) the intervals are 10.78 and 14.22 d) none of the above

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