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
5.6 inches and a standard deviation of 0.9 inches. In what range would you expect to find the middle 98% of most head breadths?
Between__ and___ inches
If you were to draw samples of size 48 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 s ample?
Between__ and___ inches
Round to 2 decimal places.