SOLUTION: Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,500 per hour and a standard deviation of $195. What is th

Question 1126138: Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,500 per hour and a standard deviation of $195.

What is the operating cost for the lowest 4 percent of the airplanes? (Round z value to 2 decimal places. Omit the "$" sign in your response.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z for 0.04 is -1.75
z=(x-mean)/sd
-1.75=(x-2500)/195
-341.25=x-2500
x=2158.75
RELATED QUESTIONS
Assume that the hourly cost to operate a commercial airplane follows the normal... (answered by robertb)

Assume that the mean hourly cost to operate a commercial airplane follows the normal... (answered by Boreal)

Assume that the mean hourly cost to operate a commercial airplane follows the normal... (answered by ewatrrr)

Assume that the hourly cost to operate a commercial airplane follows the normal... (answered by stanbon)

Assume that the mean hourly cost to operate a commercial airplane follows the normal... (answered by stanbon)

The number of cell phone minutes used by high school seniors follows a normal... (answered by ewatrrr)

Cost of domestic airfare follows a normal distribution with a mean of $385 dollars and a... (answered by stanbon)

The salary of 500 employees of a production home follows normal distribution with mean... (answered by Theo)

assume that airplane engines operate independently of each other and that at least half... (answered by Fombitz)