Engineers must consider the breadths of male heads when designing helmets
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.