mpt is displayed for your review only sider the breadths of male heads when desi

Question

mpt is displayed for your review only sider the breadths of male heads when designing helmets. The company researchers have determined that the population e have head breadths that are normally distributed with a mean of 6.6-in and a standard deviation of 1.2-in. Due to financial mets will be designed to fit all men except those with head breadths that are in the smallest 3.5% or largest 3.5%. um head breadth that will fit the clientele? um head breadth that will fit the clientele? r as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are 6 F6 F8 F9 F1O 5AN F7 sko

Explanation / Answer

for top and bottom 3.5% ;l critical value of z=-/+1.812

therefore minimum head breadth =mean+z*Std deviaiton =6.6-1.812*1.2=4.4

maximum head breadth =mean+z*Std deviaiton =6.6+1.812*1.2=8.8

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