1. One sample of n = 10 scores has a mean of 8 and a second sample of n = 5 scores has a mean of 2. If the two samples are combined, what is the mean for the combined sample? 2. A sample with a mean...

1. One sample of n = 10 scores has a mean of 8 and a second sample of n = 5 scores has a mean of 2. If the two samples are combined, what is the mean for the combined sample?

2. A sample with a mean of M = 8 has SX = 56. How many scores are in the sample?