Answer:
0.8041
Step-by-step explanation:
We know that
μ=72 and σ=5
and P(65<X<78)
We can determine the Z value as (X-μ)/σ
P( 65<X<78 )=P( 65-72< X-μ<78-72)


To fine the Z values:

From the standard normal tables:

to find P ( Z<-1.4)

From the standard normal tables:

Therefore


Answer:
-3.........................
Answer:
ching song
Step-by-step explanation:
blig blong
Answer:
F = 1.25
Step-by-step explanation:
All you would have to do is cross multiply, so our equations starts at
. We would now multiply F by 8 and 2 by 5. We now have 8F = 10. We can now divide both sides of the equation by 8 to get F = 1.25.
Answer:
(2,2)
Step-by-step explanation: