Question

21. The mean of following distribution os 7.5 then the value of Pis
Х 3 5 7
9
11 13
Y
6
15
P
8
4
a) 3
b) 5
c) 4
d) 7​

Answer 1

Answer:

21. The mean of following distribution os 7.5 then the value of Pis

Х 3 5 7

9

11 13

Y

6

15

P

8

4

a) 3

b) 5

c) 4

d) 7