The life of a type of battery is normally distributed with µ=100 hours and ? = 20 hours.
Question: Question 2
The life of a type of battery is normally distributed with µ=100 hours and σ = 20 hours.
a) What proportion of the batteries will last between 100 and 115 hours?
b) What proportion of the batteries will last more than 90 hours?
c) 90% of the batteries will last more than how many hours?
d) What is the interquartile range of the battery life?
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Solution Format: Word Document
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