Unoccupied seats on flights cause the airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoccupied seats per flight over the past year with the standard deviation of 4.1 seats. To accomplish this, the records of 225 flight are randomly selected and the number of occupied seats is noted with a mean of 11.6 seats. Estimate the expected population mean number of unoccupied seats per flight using 90% confidence interval.

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A:

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A: It is given that  Standard deviation, σ = 4.1 Sample size, n = 225

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A: From the above calculation we have  Mean= µx̅ = µ = 75847Standard deviations (σx̅ ) =3200

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Q: survey working 13.1 million visitors for a specific month with the standard deviation was 4.1…

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A: # Type data in excel overhead width  Weight 7.1 110 7.5 158 9.6 240 9.2 197 8.9 204…

Q: Unoccupied seats on flights cause the airlines to lose revenue. Suppose a large airline wants to…

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Q: 9,440 12,400 10,400 12,100 10,000 9,895 11,250 8,795 12,500 9,340 10,150 10,000 7,500 8,000 10,440…

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