Question

choose, always, sometimes or never

HW09: Problem 7 Problem Value: 5 point(). Problem Score: 0 % . Attempts Remaining: 2 attempts. (5 points) Consider each of the statements below. For each statement, decide whether it is sometimes, always, or never a true statement. 1. If two identical studies on the same topic both produced estimated effect sizes less than d = 0.6, a third study that uses the same ? procedures will also produce an estimated effect size less than 0.6 2 In general, increasing the sample size in a statistical study will decrease the standard error of the statistic computed from the sample 3. In a hypothesis test, the direction of the alternative hypothesis (right-tailed, left-tailed, or two-tailed) affects the way the p-value is ? computed. 4.A hypothesis test that produces a positive test statistic can produce a positive effect size. ? | 5. A hypothesis test that produces a p-value < 0.001 will produce an effect size lal>0.8 Always Sometimes swers Never Preview My Answers Submit Answers

Answer 1

1. If two studies produces effect sizes less than d = 0.6, it does not guarantee that the third study will also produces effect sizes less than d = 0.6. The answer is Sometimes

2.

In general, increasing the sample size, decreases the standard error. The answer is Always

3.

P-value of two-tail test = 2 * Pr( > test statistic)

P-value for right-tailed or left-tailed test = Pr( > |test statistic|)

The answer is Always

4.

Effect size is always positive. The answer is Always

5.

A low p-value (strong statistical significance) can have low effect size because of no practical significance.

The answer is Sometimes