Question

Problem Value: 5 point(s). Problem Score: 40%. Attempts Remaining: 1 attempt. (5 points) Consider each of the statements below. For each statement, decide whether it is sometimes, always, or never a true statement 1. If a right-tailed hypothesis test produces a negative test statistic, the associated p-value will be larger than 0.50 ? 2. In order to compute Cohen's d., a statistician must directly know the sample size ? 3. A hypothesis test that produces a positive test statistic can produce a positive effect size. ? 4. A hypothesis test that produces a p-value <0.001 will produce an effect size d > 0.8 5. In general, increasing the sample size in a statistical study will decrease the standard error of the statistic computed from the sample.

Answer 1

① sometimes true. Because there may be possiblity that P-value may less that 0.50. never true. because of sample size - conen's d formula in indepedant d= mean (xi) - mean Cx₂) a pooled variance of K, and X . ③ Always true. I because effent size si gire only direcetion is test statistic is positive & it means First mean is greater than second mean obiviously effent size is positive. size 9 Alway trire. 2 Becaulse PLX has large effent ic. then effect ldi 20.48. 6 Always - Standard standard of sample true. 15 sample size enor obivusly enor invencely size, is incresel then. decresses becay propational root