Social identity is based on our perception that we are similar to many other individuals.

One sample has a mean of M = 4 and a second sample has a mean of M = 8. 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 = 7 scores? b) What is the mean for the combined set if the first sample has n = 3 and the second sample has n = 7? c) What is the mean for the combined set if the first sample has n = 7 and the second sample nas n = 3?

Most characteristics are determined by 25 pairs of chromosomes called autosomes

Indicate whether the statement is true or false.