The Average Time Between Failures for a Solenoid Is 36

question 31

Essay

The average time between failures for a solenoid is 36 months.Determine the following probabilities: (i)probability of failure before 36 months(ii)the probability that a system which is composed of two such solenoids will fail within 36 months if both must work for the system to work

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Definitions:

Median

The median is the middle value of a data set when it's arranged in ascending or descending order, effectively dividing the dataset into two halves.

Mode

The value that occurs most frequently in a given data set.

Median Hours

The middle value of the total hours studied or worked, sorted in ascending or descending order.

Sample Mean Hours

The average number of hours calculated from a sample, used to estimate the mean hours of a population.