Statistics
posted by Brittany .
An important measure of the performance of a locomotive is its "adhesion," which is the locomotive's pulling force as a multiple of its weight. The adhesion of one 4400horsepower diesel locomotive model varies in actual use according to a Normal distribution with mean μ = 0.39 and standard deviation σ = 0.036
What proportion of adhesions (± 0.001) measured in use are higher than 0.32?
What proportion of adhesions (± 0.001) are between 0.32 and 0.45?

Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.
Respond to this Question
Similar Questions

physics
A girl pulls a toy train with a horizontal force of 10N The tention between the locomotive and the carrdge is 3N the friction on the carrydgers in and the mass of the locomotive and carrydge are 2 kg and 1kg respectively now calculate … 
math
If the O scale (model train question) is 1/48 the acutal length. An Oscale locomotive is 1.05ft long. How long is the actual locomotive? 
physics
A locomotive pulls a series of wagons. Which is the correct analysis of the situation? 
Physics
Two toy locomotives approach each other along the same line, and upon collision both stop dead still. One locomotive has three times the speed of the other and the sum of their masses is 4.48 kg. What is the mass of the faster locomotive? 
Statistics
An important measure of the performance of a locomotive is its "adhesion," which is the locomotive's pulling force as a multiple of its weight. The adhesion of one 4400horsepower diesel locomotive model varies in actual use according … 
Physics
Locomotive A travels 100km/hr and locomotive B travels 140km/hr. Locomotive B starts 15 kilometers Behind locomotive A and travels on the same direction. Find the time elapsed and how far each traveled before they meet. 
Physics
two locomotives start at the SAME place but Locomotive A gets a half hour head start. Locomotive A travels at 100 km/hr and Locomotive B travels at 140 km/hr.Find the time elapsed and how far each traveled before they meet. 
Statistics
What is the 75th percentile of the adhesion distribution? 
Statistics
What is the 75th percentile of the adhesion distribution? 
physics
A 2.6 kg toy locomotive is pulling a 1.7 kg caboose. The frictional force of the track on the caboose is 0.52 N backward along the track. If the train is accelerating forward is 3.1 m/s2, what is the magnitude of the force exerted …