Question

Q.12 If the mean of the
observations: X, X + 4, X + 5, X +
6, X + 10 is 9, the mean of the
last three observations is *
O 10
O 11
O 12
O 13​

Answer 1

Answer:

12 is the answer

Step-by-step explanation:

follow me

Answer 2

Answer:

12 is the answer of the upper question