Answer:
D
Step-by-step explanation:
Answer:
3.24 minutes
Step-by-step explanation:
Use a calculator or chart to find the z-score.
P(Z > z) = 0.60
P(Z < z) = 0.40
z = -0.253
Find the time associated with the z-score.
z = (x − μ) / σ
-0.253 = (x − 4) / 3
x = 3.24
That's a rectangular prism.
And the formula to find the volume of a rectangular prism is:

Plug in what we know:

Multiply the three numbers together:
6 because you set them equal and solve
Answer: z=4
Step-by-step explanation:
Subtract 6 on both sides and 10-6=4 and then plug 4 into z and the equation is true