Lifetime of an electronic component has an exponential distribution with mean of 100 hours. (Exponential distribution problem)
Question:
Lifetime of an electronic component has an exponential distribution with mean of 100 hours. (Exponential distribution problem)
a. Find the probability that a component operates at least 200 hours.
b. Find the probability that a component operates last 150 and 250 hours.
c. Find the probability that a component operates last less than 100 hours.
d. Find the 99th percentile.
e. What is the standard deviation of X?
continued...
Suppose the lifetimes of a certain brand of televisions are normally distributed with U(MEAN) = 6, Standard deviation = 0.5.
Find the warranty time for the manufacturer so that no more than 1% will have to be replaced. I know the answer is 4.835 but why?
Probability and Statistics
ISBN: 978-0321500465
4th edition
Authors: Morris H. DeGroot, Mark J. Schervish