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Year 12 Methods (Unit 3 & 4) The normal distribution

Solving problems using the normal distribution

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Questions
Question 1
194571
The lifetime of a certain brand of battery is normally distributed with a mean of \(40\) hours and a standard deviation of \(5\) hours. Using technology, find the probability that a battery chosen at random lasts less than \(45\) hours.
\(0.8413\)

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