SOLUTION: Number of students who graduate College every year is Normal Distribution
with mean = 400 and standard deviation 50. Find probability that this year
between 300 and 500 stude
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-> SOLUTION: Number of students who graduate College every year is Normal Distribution
with mean = 400 and standard deviation 50. Find probability that this year
between 300 and 500 stude
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Question 1035401: Number of students who graduate College every year is Normal Distribution
with mean = 400 and standard deviation 50. Find probability that this year
between 300 and 500 students will graduate College. Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! Let P be probability
:
P ( 300 < X < 500 ) = P ( X < 500 ) - P ( X < 300 )
:
calculate z-score for each probability and determine its probability by consulting the table of z-scores
:
z-score ( X < 500 ) = ( 500 - 400 ) / 50 = 2
P ( X < 500 ) = 0.9772
:
z-score ( X < 300 ) = ( 300 - 400 ) / 50 = -2
P ( X < 300 ) = 0.0228
:
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P ( 300 < X < 500 ) = 0.9772 - 0.0228 = 0.9544
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