Answer:
c
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
σ = 4 ; μ =?
8.52 to the left of X
.
P(X < 8.52) = 64.8%
P(X < 8.52) = 0.648
Using the Z relation :
(x - μ) / σ
P(Z < (8.52 - μ) / 4)) = 0.648
The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)
Z = 8.52 - μ / 4
0.38 = 8.52 - μ / 4
0.38 * 4 = 8.52 - μ
1.52 = 8.52 - μ
μ = 8.52 - 1.52
μ = 7
It would be: 4 / 2/5
We can re-write it as:
4 * 5/2
= 20/2
= 10
In short, Your Answer would be: 10
Hope this helps!
Should be c ? can you send me a picture please ? and it’s dice .
I’m almost 100% sure it is: D. Graph D
Happy holidays and hope this helps!!
