Unoccupied Seats on Flights Cause Airlines to Lose Revenue $\mu$ To Within 2 Seats and Be 95% Confident?
A)130
B)65

question 30

Multiple Choice

Unoccupied seats on flights cause airlines to lose revenue.Suppose a large airline wants to estimate its average number of unoccupied seats per flight over the past year.225 flight records are randomly selected and the number of unoccupied seats is noted with a sample mean of 11.6 seats and a standard deviation of 4.1 seats.How many flights should we select if we wish to estimate $\mu$ to within 2 seats and be 95% confident?

• A)130
• B)65
• C)33
• D)17
• E)12

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Definitions:

Big Data

Large volumes of data - both structured and unstructured - that inundate a business on a day-to-day basis.

Data-Processing Techniques

Methods and procedures used for transforming raw data into meaningful information through various manipulations such as coding, sorting, and summarizing.

Sampling Without Replacement

Once an element has been included in the sample, it is removed from the population and cannot be selected a second time.

Big Data

Extremely large data sets that may be analyzed computationally to reveal patterns, trends, and associations, especially relating to human behavior and interactions.