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Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined...

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 1.2-in.

In what range would you expect to find the middle 98% of most head breadths?
Between ____________ and ____________ .

If you were to draw samples of size 44 from this population, in what range would you expect to find the middle 98% of most averages for the breadths of male heads in the sample?
Between __________ and __________ .

Enter your answers as numbers. Your answers should be accurate to 2 decimal places.

Math   Statistics-And-Probability   
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