Hi I really hope someone can help me here, I really am stuck and would like to know how to do them! 1.) A sample of 8 integers has a mean of 5 and a variance of 5.25. The integers are 1,3,5,7,4,5,p,q. Find p and q given that p
There appears to be something wrong in your equation.
From variance equation you should get
p^2 + q^2 - 10(p+q) = -33
OR (p+q)^2 - 2pq -10 (p+q) = -33
(15)^2 - 2pq -150 = -33
225 -2pq - 150 = -33
2pq = 108 OR pq = 54
Now u have. Two equations
P + q = 15 and pq = 54
Solve the see and you will get two values of p as 9 and 6
since p < q select p = 6 And q will be 9