MY NOTES PRACTICE ANOTHER 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 64 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed, with mean u = 64 tons and standard deviation o = 1.2 ton. n USE SALT (a) What is the probability that one car chosen at random will have less than 63.5 tons of coal? (Round your answer to four decimal places.) (b) What is the probability that 44 cars chosen at random will have a mean load weight x of less than 63.5 tons of coal? (Round your answer to four decimal places.)

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MY NOTES
PRACTICE ANOTHER
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 64 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed, with mean u = 64 tons and
standard deviation o = 1.2 ton.
In USE SALT
(a) What is the probability that one car chosen at random will have less than 63.5 tons of coal? (Round your answer to four decimal
places.)
(b) What is the probability that 44 cars chosen at random will have a mean load weight x of less than 63.5 tons of coal? (Round your
answer to four decimal places.)
Transcribed Image Text:MY NOTES PRACTICE ANOTHER 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 64 tons of coal into each car. The actual weights of coal loaded into each car are normally distributed, with mean u = 64 tons and standard deviation o = 1.2 ton. In USE SALT (a) What is the probability that one car chosen at random will have less than 63.5 tons of coal? (Round your answer to four decimal places.) (b) What is the probability that 44 cars chosen at random will have a mean load weight x of less than 63.5 tons of coal? (Round your answer to four decimal places.)
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