Explain in your own words what pooled variance is. If you have two different samples of different sizes (the n for each group is different_, explain wether the value of the pooled variance will be closer to the larger sample or smaller sample

What is Pooled Variance Estimate?

Explain the circumstances under which we would need to pool the variance for an independent samples t-test

A study aims to compare the social media usage rates of men and women.  Nine men and 9 women are drawn from the general population and the average time (in minutes) they spent on social media each day was compared (men’s mean = 40, sum of squares = 153; women’s mean = 48, sum of squares = 216).  What is the (a) estimated population variance for each random sample, and (b) pooled variance?       Estimated population variances = 19.13 and 27.00; Pooled variance = 23.07       Estimated population variances = 19.13 and 27.00; Pooled variance = 20.50       Estimated population variances = 17.00 and 24.00; Pooled variance = 20.50       Estimated population variances = 17.00 and 24.00; Pooled variance = 23.07

Describe a study in which you can use both nonparametric and parametric statistics. A researcher has participants expecting to receive either painful or mild electrical shocks during a study wait in a quarter-full waiting room with other participants. He then measures whether they choose to sit next to other participants or if they sit far away on their own. What is the best test to run for this study and why?

Two separate samples, each with n = 14 individuals, receive different treatments. After treatment, the first sample has SS = 1512 and the second has SS = 1620. Find the pooled Variance for two independent samples. (hundredths place) Type only the pooled variance.