Friday
April 18, 2014

Homework Help: Stats ()

Posted by penelope on Friday, July 12, 2013 at 6:31pm.

Coal is carried from a mine in West Virginia to a power plant in Pittsburgh in hopper cars on a long train. The automatic hopper car loader is set to put 75 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed with an average of 75 tons and a standard deviation of 0.8 ton.

What is the chance 20 cars chosen at random will have an average load of less than 74.7 tons of coal?


1.Enter the average of the box:


2.Enter the SD of the box:


3.Enter the number of draws from the box:

4.Calculate the expected value for the average (EVave):

5.Calculate the standard error for the average (SEave):Round to three decimal places.

6.Calculate the chance 20 cars chosen at random will have an average load of less than 74.7 tons of coal. Round your answer to one decimal place.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Algebra 2 (Linear Programming) - The Carbon coal company has 2 mines, a surface ...
physics - A mine car, mass= 440 kg rolls at a speed of 0.50 m/s on a horizontal ...
Stats - The probability of a child getting coal in their stocking is 0.2. If ...
Physics - A mine car (mass 380 kg) rolls at a speed of 0.5 m/s on a horizontal ...
physics - A mine car (mass = 452 kg) rolls at a speed of 0.356 m/s on a ...
physics - A mine car, whose mass is 590 kg, rolls at a speed of 0.5 m/s on a ...
Marginal Analysis - Applacian Coal Mine Co believes it can increase labor ...
us history - Sara, Sorry to bother you again, I read the websites you provided ...
Finite Mathematics - I just need help with the set up of this problem, that's ...
Thermo - Calculate the standard cahnge in enthalpy for the combusation of coal/ ...

Search
Members