Suppose that, on average, electricians earn approximately u $54,000 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is a = $12,000. What is the probability that the average salary of four randomly selected electricians is less than $50,000? O 0.3707 O 0.7486 O 0.6293 0.2514
Suppose that, on average, electricians earn approximately u $54,000 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is a = $12,000. What is the probability that the average salary of four randomly selected electricians is less than $50,000? O 0.3707 O 0.7486 O 0.6293 0.2514
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:Suppose that, on average, electricians earn approximately u = $54,000 per year in the United States.
Assume that the distribution for electricians' yearly earnings is normally distributed and that the
standard deviation is o = $12,000.
What is the probability that the average salary of four randomly selected electricians is less than
$50,000?
O 0.3707
O 0.7486
O 0.6293
0.2514
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