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The lifetime of a certain transistor in a certain
Chapter 2, Problem 3E(choose chapter or problem)
QUESTION:
The lifetime of a certain transistor in a certain application has mean 900 hours and standard deviation 30 hours. Find the mean and standard deviation of the length of time that four transistors will last.
Questions & Answers
QUESTION:
The lifetime of a certain transistor in a certain application has mean 900 hours and standard deviation 30 hours. Find the mean and standard deviation of the length of time that four transistors will last.
ANSWER:
Answer
Step 1 of 3
Here they mean and standard deviation of one transistor
Now we need to find mean and standard deviation of four transistors
The mean of the transistor is =900
The standard deviation of the transistor is =30