Question

The mean of nine observations is 36. If the mean of the first six observations is 37, then what is
the mean of the last three observations .
a)33.5
b)34
c)34.5
d)35​

Answer 1

Answer:

B) 34

Step-by-step explanation:

Mean of 1st 9 is 36

Therefore Sum of 1st 9= 9x36= 324

Mean of 1st 6 is 37

Therefore sum of 1st 6 =6x37= 222

Sum of last 3 = Sum of 1st 9 - Sum of 1st 6= 324-222= 102

Therefore Mean of last 3= Sum of last Three / 3= 102/3= 34

Answer 2

Answer:

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