Engineers must consider the breadths of human 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 9 in and a standard deviation of 0 8 in Using the Empirical Rule 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 45 from this population in what range would you expect to find the middle 98 of most averages for the breadths of human heads in the sample Between and Enter your answers as numbers Your answers ch L