Scores on the quantitative portion of the GRE are approximately normally distributed with mean μ = 150.8 and standard deviation o = 8.8. What is the probability that 30 randomly selected students will have a mean score that is between 149 and 152.6? (Round your answer to three decimal places.)

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 8E
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Scores on the quantitative portion of the GRE are approximately normally distributed with mean
μ = 150.8 and standard deviation σ = 8.8.
What is the probability that 30 randomly selected students will have a mean score that is between 149
and 152.6?
(Round your answer to three decimal places.)
Transcribed Image Text:Scores on the quantitative portion of the GRE are approximately normally distributed with mean μ = 150.8 and standard deviation σ = 8.8. What is the probability that 30 randomly selected students will have a mean score that is between 149 and 152.6? (Round your answer to three decimal places.)
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