Question

17) If the mean of five observations X, X+2,x+4, X+6 and x+8 is 13, find the value of x. 11 8) x+3, ​

Answer 1

Answer:

Given observations x,x+2,x+4,x+6,x+8

∵ x+(x+2)+(x+4)+(x+6)+(x+8) =11

⇒ 5x+20/5 =11

⇒x=7

So, the observations are 7,9,11,13,15

Req. mean = 11+13+15/3 =13

Step-by-step explanation:

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Answer 2

Answer:

(x+x+2+x+4+x+6+x+8)/5=13

(5x+20)/5=13

5x+20=65

5x=65-20

5x=45

x=9