1000 students took a national aptitudetest. As a result, the mean score was 71 and standard deviation was 6. Assumingthat distribution ofthe scores isnormal, what is the probability that a score...

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1000 students took a national aptitude test. As a result, the mean score was 71 and standard deviation was 6. Assuming that distribution ofthe scores is normal, what is the probability that a score chosen at random will be 73 or greater?



Answered Same DayDec 21, 2021

Answer To: 1000 students took a national aptitudetest. As a result, the mean score was 71 and standard...

Robert answered on Dec 21 2021
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1000 students took a national aptitude test. As a result, the mean score was 71 and standard deviation was 6. Assuming that distribution of the scores is normal, what is the probability that a score chosen at random will be 73 or greater?
Solution:
We have µ = 71 and σ = 6
The respective Z-score...
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