Question

Given dat d mean of
x,(x+3),(x+5),(x+7),(x+10) is 9,
find x
calculate the mean of d last 3 observations

Answer 1

Answer:

the value of x is 4 and the mean of last 3 observation is 11⅓

Step-by-step explanation:

mean of observation =sum of observation /no of

observation

9={x+(x+3)+(x+5)+(x+7)+(x+10)}/5

45=5x+25

x=4

mean of last 3 observation is-

mean=(9+11+14)/3

=11⅓

Answer 2

Step-by-step explanation:

hey mate here is your answer in attachment