Question

b) If the mean of the observation x, x+2, x+4, x+6 , x+8 is 11, find i) the value of x. ii) the resulting mean if each observation is increased by 3. ​

Answer 1

Answer:

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

5x+20=66

5x=46

x =46/5

Answer 2

Answer:

x+x+2+x+4+x+6+x+8=(5x+20)/5=x+4=11

x=7

part2= the resulting mean =11+3=14