Question

If the mean of five observations
x, x + 2,x + 4,x + 6 and x + 8 is
11, then the mean of last three
obsevations is​

Answer 1

Answer:

X + X + 2 +X + 4 + X + 6 + X + 8 is equal to 11

5x +20/5=11

5(X + 4)=11

X + 4 is equals to 11/5

x=11/5-4

x=11-20

x=-9

last 3 digits are

1. X + 4 =-5
2. X + 6=-3
3. X + 8 =-1

therefore, mean of - 5 - 3 and -1 is

-5 +(-3)+(-1)=-9/3=-3 or 3

Step-by-step explanation:

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