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The Useful Life of a Certain Valve at a Pumping

question 28

Essay

The useful life of a certain valve at a pumping station is normally distributed with a mean of 48 months and a standard deviation of five months.Determine these probabilities:
(i)The valve will fail within 44 months of its installation.(ii)The valve will last at least 40 months,before failing.


Definitions:

Iteration

The process of repeating a set of instructions or steps a specific number of times or until a certain condition is met in programming.

Invocation

The act of calling or executing a function or a method in programming.

Invocation Structure

The specific arrangement and syntax used in programming languages to call or invoke functions, methods, or procedures.

Sequence

A particular order in which related events, movements, or things follow each other.

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