Question

If the mean of five observations x,x+2,x+3,x+4 and x+6 is 14 find the value of x.

Please answer to it only if you know the answer to it. Thank you...​

Answer 1

Answer:

9

Step-by-step explanation:

given : the mean of the first five observations - x, x+2, x+4, x+6, x+8 is 11 required to find out : the first three observations

solution : 

x + x+2 + x+4 + x+6 + x+8 / 5 = 11         

5x + 20 / 5 = 11

5x + 20 = 11*55

5x + 20 = 55

5x = 55 - 20

5x = 35  

x = 35/5

∴ x = 7

the first three observations -

x = 7

x+2 = 7+2 = 9

x+4 = 7+4 = 11

∴ the first three observations are 7, 9, 11

the mean of the first three observations :

 -> 7+9+11/3

->27/3 

∴ 9 is the mean of the first three observations

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hope so my answer is useful and mark as best if possible ..!!

Answer 2

Answer:

1byb205748843484454248464584