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Answer to Question #1163 in Statistics and Probability for Brittany
Question #1163
One sample has a mean of M= 6 and a seond 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 score and the second sample has n = 8? &
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 score and the second sample has n = 8? &
Expert's answer
A) The mean wil lbe equal to
X = (5*6+5*12)/(5+5) = 9
B) The mean of the combined set would be
X = (4*6 + 8*12) / (4+8) = 10.
X = (5*6+5*12)/(5+5) = 9
B) The mean of the combined set would be
X = (4*6 + 8*12) / (4+8) = 10.
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#340153 on Dec 2023
#340153 on Dec 2023
Comments
The mean for the combined set of scores will be (n1M1+n2M2)/(n1+n2)=(4*12+6*8)/(4+6)=(48+48)/10=96/10=9.6.
one sample with n=4 scores has a mean of m=12, and a second sample with n 6 scor4es a mean of m=8 if the two sample are combined, what is the mean for the combined set of scores?
Dear nicole. The mean for the combined sample will be (n1M1+n2M2)/(n1+n2)=(4*10+6*5)/(4+6)=(40+30)/10=70/10=7.
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?
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