Normal distribution - minimum/maximum helmet sizes

floricienta@L

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Jun 20, 2020
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Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are normally distributed with a mean of 5.7-in and a standard deviation of 0.9-in. Due to financial constraints, the helmets will be designed to fit all men except those with head breadths that are in the smallest 2.2% or largest 2.2%.

What is the minimum head breadth that will fit the clientele?
min =

What is the maximum head breadth that will fit the clientele?
min =

Enter your answer as a number accurate to 1 decimal place.
 
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