Unoccupied Seats on Flights Cause Airlines to Lose Revenue

question 81

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 μ to within 2 seats and be 95 percent confident?

• A) 130
• B) 65
• C) 33
• D) 17
• E) 12

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Definitions:

Clinical Epidemiology

The study of health and illness conditions in populations to understand the patterns, causes, and effects of health and disease conditions.

Supportive Interventions

Actions or strategies designed to offer assistance, encouragement, or comfort to individuals in order to improve their well-being or circumstances.

Antidepressant Medication

Drugs specifically designed to relieve symptoms of depression by altering chemical balances in the brain.

DSM-V

The DSM-V (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition) is a handbook used by healthcare professionals as the authoritative guide to the diagnosis of mental disorders.