Answer:
P ( Z < 72 ) = 0.8577 or P ( Z < 72 ) = 85.77 %
Step-by-step explanation:
We know:
-A normal distribution
-Mean μ = 69.0 in
-Standard deviation σ = 2.8 in
- Population n = 350
And doors height 72 in
If passengers will pass through the door without bending that means he must be under 72 in tall, therefore we are looking for the probability of men under 72 in, to find such probability we compute the value of Z according to
Z = ( X - μ ) / σ ⇒ Z = ( 72 - 69 ) / 2.8
Z = 1.07
Now with this value we look the Z tables, to find a value of: 0.8577
So the probability of select a men and that he can fit through the door is
P ( Z < 72 ) = 0.8577 or P ( Z < 72 ) = 85.77 %
Answer:
y = -3x/2 +8
Step-by-step explanation:
3x+2y=16
1. Isolate the y variable by transposing 3x to the right side.
2y=-3x+16
2y/2=-3x/2+16/2
y=-3x/2+8
Final answer: y = -3x/2 +8
Answer:
About 8 pounds and 8 ounces
Step-by-step explanation:
I'm not 100% sure but I'm pretty sure it's that.
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