For Air Travelers, One of the Biggest Complaints Is of the Waiting

question 63

Multiple Choice

For air travelers, one of the biggest complaints is of the waiting time between when the airplane taxis away from the terminal until the flight takes off. This waiting time is known to have a skewed-right distribution with a mean of 10 minutes and a standard deviation of 8 minutes. Suppose 100 flights have been randomly sampled. Describe the sampling distribution of the mean waiting time between when the airplane taxis away from the terminal until the flight takes off for these 100 flights.

• A) Distribution is skewed-right with mean = 10 minutes and standard error = 0.8 minutes.
• B) Distribution is skewed-right with mean = 10 minutes and standard error = 8 minutes.
• C) Distribution is approximately normal with mean = 10 minutes and standard error = 0.8 minutes.
• D) Distribution is approximately normal with mean = 10 minutes and standard error = 8 minutes.

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Definitions:

GPAs

Grade Point Averages, a numerical calculation that represents the average value of the accumulated final grades earned in courses over time.

Proficiency Test

An examination designed to measure an individual's skill or knowledge level in a particular area or discipline.

Residual Standard Deviation

A measure of the standard deviation of residuals in regression analysis, indicating the typical distance between observed and predicted values.

Proficiency Test

An evaluation designed to assess an individual's competence or skill level in a particular area.