One sample has n = 4 scores and M = 10.A second sample has n = 6 scores and M = 5.If the two samples are combined, then what is the mean for the combined sample?
A)70/4 = 17.5
B)70/6 = 11.67
C)70/10 = 7
D)cannot be determined with the information given

Question

Quizplus · Accepted Answer

The total sum of scores for the first sample is 4 * 10 = 40, and for the second sample is 6 * 5 = 30. The combined sum is 40 + 30 = 70. The total number of scores is 4 + 6 = 10. Therefore, the mean for the combined sample is 70/10 = 7.

One Sample Has N = 4 Scores and M =