Question: One sample has a mean of M =6 and a second sample has a mean of M=12. The two samples are combined into a single set of scores.

a. What is the mean for the combined set if both of the original samples have n =5 scores?

b. What is the mean for the combined set if the first sample has n=4 scores and the second sample has n =8?

c. What is the mean for the combined set if the first sample has n =8 scores and the second sample has n =4?