The mean price of a sample of mid-range computer graphics cards at the beginning of 2020 was $150. The mean price of an independent sample of mid-range cards at the beginning of 2021 was $185. If the pooled variance of the samples was 36, approximately what is the corresponding Cohen's effect size? 0.97 30.8 5.83 5.14

According to Cohen's descriptive guidelines... a small effect size is .80 variance accounted for by the independent variable is about half of the size of random variability when the effect size is medium the sample variance will always approximate the population mean the effect size is related to the pooled variance estimate in a within-groups experimental design

Which of the following is a common measure of effect size?Question 2Answera.Mean deviationb.Cohen's dc.Z-scored.Standard Error

A normal population has mean 100 and variance 25.How large must the random sample be if you want the standard error of the sample average to be 1.5?a.9b.10c.11d.None of the otherse.12

Forty-eight participants are divided into two different-sized groups and asked to play a game while very, very hungry. Given that their pooled variance estimate is 7.19, when conducting a t-test to compare the two groups scores, approximately what would the standard error of the distribution of sample mean differences be? cannot say based on the information given 0.15 0.77 0.39

The mean of a distribution is 18 and the standard deviation is 4.5. What is the value of thecoefficient of variation?(a) 50%(b) 25%(c) 100%(d) 75%