SOLUTION: Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.)
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-> SOLUTION: Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.)
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Question 1137701: Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Enter a number. Round your answer to four decimal places.)
μ = 22; σ = 3.8
P(x ≥ 30) = Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! Probability (P) ( X > or = 30) = 1 - P( X < 30 )
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z-score(30) = (30 - 22)/3.8 = 2.1053 is approximately 2.11
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look in z-tables for the corresponding probability
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P ( X > or = 30) = 1 - 0.9826 = 0.0174
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