Data Set 9-4: N = 6 $\Sigma$X = 30 $\Sigma$X 2 = 180 -Refer to Data Set 9-4. For H₀: $\mu$ = 3.00, the effect size index is A) 2.00 B) 0.82 C) 0.89 D) none of the other alternatives are correct.

Question

Quizplus · Accepted Answer

The effect size index (Cohen's d) is calculated as (M - $\mu$) / SD. Here, M = $\Sigma$X / N = 30 / 6 = 5. The variance can be found using $\Sigma$XS1U1P12S1S1P0 = 180, which is the sum of squares. Variance = 180 / 6 - (5)^2 = 5. SD = sqrt(5) = 2.24. Cohen's d = (5 - 3) / 2.24 ≈ 0.82.

Data Set 9-4: N = 6 Σ\SigmaΣ X = 30 Σ\SigmaΣ X2 = 180 -Refer to Data Set 9-4

Data Set 9-4: N = 6 $\Sigma$ X = 30 $\Sigma$ X² = 180
-Refer to Data Set 9-4