The Plane Is on Time at L

question 12

Essay

The plane is on time at L.A.,when it left New York on time but left Chicago later than scheduled.

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Definitions:

Z-scores

A numerical indicator showing how a specific value compares to the average of a set of numbers, expressed by how many standard deviations it is from the average.

Standard Normal Distribution

A normal distribution with a mean of 0 and a standard deviation of 1, used as a basis for comparison in statistical analysis.

Greater Than

A mathematical comparison indicating that one quantity is larger than another.

Z-scores

A statistical measurement of a score’s relationship to the mean in a group of scores, indicating how many standard deviations an element is from the mean.