Answer:
624,600
Step-by-step explanation:
624,612
612 rounds to 600
624,600
20% of 60 is 12
60/300 = 20%
The friend is incorrect because that is 20% of 300 not 60
Answer:
a) 0.5 = 50% of flanges exceed 1 millimeter.
b) A thickness of 0.96 millimeters is exceeded by 90% of the flanges
Step-by-step explanation:
A distribution is called uniform if each outcome has the same probability of happening.
The uniform distributon has two bounds, a and b, and the probability of finding a value higher than x is given by:

The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters.
This means that 
(a) Determine the proportion of flanges that exceeds 1.00 millimeters.

0.5 = 50% of flanges exceed 1 millimeter.
(b) What thickness is exceeded by 90% of the flanges?
This is x for which:

So




A thickness of 0.96 millimeters is exceeded by 90% of the flanges
Answer:
0.075758 miles per minute
Step-by-step explanation:
3600 divided by 9 = 400
400 ft = 0.075758 miles