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 7.1-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 33 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 .
Get Answers For Free
Most questions answered within 1 hours.