The amount of time a service technician needs to change the oil in a car is...
The amount of time a service technician needs to change the oil in a car is uniformly distributed between 10 and 23 minutes. Let X = the time needed to change the oil on a car. Write the distribution.
Find P (x > 20).
Find the 65th percentile.
Homework Answers
Solution :
Given that,
a = 10
b = 23
a) P(x < c) = (c - a) / (b - a)
P(x < 20) = (20 - 10) / (23 - 10)
P(x < 20) = 0.7692
b) 65 th PERCENTILE
= a + (b - a)p
= 10 + (23 - 10)0.65
= 18.45 minutes
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