Scenario 4 One sample has SS1=60 and a second sample has SS2=48.    A) If n=10 for both samples, what would you expect the pooled variance would be compared to the two sample variances? a. The pooled variance would be exactly half way between the two sample variances. b. The pooled variance would be smaller than each sample variances.  d. The pooled variance would be larger than each sample variances.   B)  Now assume n=10 for the first sample and n=7 for the second sample, what would you expect the pooled variance would be compared to the two sample variances? a. The pooled variance would be exactly half way between the two sample variances. b. The pooled variance would be closer to the larger sample's variance.  c. The pooled variance would be closer to the smaller sample's variance.

1) A consumer research company wants to estimate the average cost of an airline ticket for a round trip from New York to Los Angeles. A random sample of 50 airfares had an average price of $438. Identify the variable. (a) Simple random sample (c) Consumer research company (b) Airline fare (d) City e) $438

Part 1. .If b = 0.523, then for every 1 unit increase in the independent variable, there is a 0.523 unit increase in the dependent variable. True or false?   2. .If b = .704, then 70.4% of the variance in the dependent variable can be explained by the variance in the independent variable. In contrast, 29.6% of the variance in the dependent variable can be explained by outside factors. True or false? 3. .If r = 0.444, then for every 1 unit increase in the independent variable, there is a 0.444 unit increase in the dependent variable. True or false?

9a. For binomially distributed data set, approximately what proportion would be below the mean and also within one standard deviation? 16.5%,25%,33%,50%,66%