One sample has n = 4 scores and M = 10.A second sample has n = 8 scores and M = 4.If the two samples are combined,what is the mean for the combined sample?
A)72/12 = 6
B)14/5 = 2.8
C)14/12 = 1.167
D)Cannot be determined with the information given

Question

Quizplus · Accepted Answer

The mean of the combined sample is calculated by taking the total sum of scores from both samples and dividing by the total number of scores. For the first sample, the total sum is 4 * 10 = 40. For the second sample, it's 8 * 4 = 32. Combined, the total sum is 40 + 32 = 72, and the total number of scores is 4 + 8 = 12. Thus, the mean is 72 / 12 = 6.

One Sample Has N = 4 Scores and M =