One sample has ss = 60 and a second sample has ss = 48.if n = 7 for both samples, find each of the sample variances and compute the pooled variance. because the samples are the same size, you should find that the pooled variance is exactly halfway between the two sample variances. the first sample has s2 = and the second has s2 = the pooled variance is s2p = assume that n = 7 for the first sample and n = 5 for the second. again, calculate the two sample variances and the pooled variance. you should find that the pooled variance is closer to the variance for the larger sample. the first sample has s2 = and the second has s2 = the pooled variance is s2p =

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?