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 6.2-in and a standard deviation of 1.1-in. Due to financial constraints, the helmets will be designed to fit all men except those with head breadths that are in the smallest 3.5% or largest 3.5%. What is the minimum head breadth that will fit the clientele? min = What is the maximum head breadth that will fit the clientele? min = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
Refer Z-table, Lookup for Z-value corresponding to area 0.035 to the left of the normal curve or use excel formula "=NORM.S.INV(0.035)" to find the Z-value.
------------------------------------------------------------------------------------------------------------
Refer Z-table, Lookup for Z-value corresponding to area 0.035 to the right of the normal curve or use excel formula "=NORM.S.INV(1-0.035)" to find the Z-value.
Get Answers For Free
Most questions answered within 1 hours.