Draw samples of size 46 from population

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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 6.6-in and a standard deviation of 0.9-in.

In what range would you expect to find the middle 95% of most head breadths?

Between _______ and ___________ .

If you were to draw samples of size 46 from this population, in what range would you expect to find the middle 95% 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.

Reference no: EM131888867

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