Coal is carried from a mine in West Virginia to a power plant in New York 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 1.5 ton. of coal loaded into each car are normally distributed, with mean u 75 tons and standard deviation o = (a) What is the probability that one car chosen at random will have less than 74.5 tons of coal? (Round your answer to four decimal places.) (b) What is the probability that 34 cars chosen at random will have a mean load weight x of less than 74.5 tons of coal? (Round your answer to four decimal places.)
Coal is carried from a mine in West Virginia to a power plant in New York 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 1.5 ton. of coal loaded into each car are normally distributed, with mean u 75 tons and standard deviation o = (a) What is the probability that one car chosen at random will have less than 74.5 tons of coal? (Round your answer to four decimal places.) (b) What is the probability that 34 cars chosen at random will have a mean load weight x of less than 74.5 tons of coal? (Round your answer to four decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Coal is carried from a mine in West Virginia to a power plant in New York 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
1.5 ton.
of coal loaded into each car are normally distributed, with mean u
75 tons and standard deviation o =
(a) What is the probability that one car chosen at random will have less than 74.5 tons of coal? (Round your answer to four decimal places.)
(b) What is the probability that 34 cars chosen at random will have a mean load weight x of less than 74.5 tons of coal? (Round your answer to four decimal places.)
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