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 6.4-in and a standard deviation of 0.9-in. in what range would you expect to find the middle 50% of most head breadths? between and . if you were to draw samples of size 47 from this population, in what range would you expect to find the middle 50% 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.