Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

A large airport records the percentage of airline flights that land no later than 15 minutes after scheduled arrival. The average of these percentages for

image text in transcribedimage text in transcribed
image text in transcribedimage text in transcribed
A large airport records the percentage of airline flights that land no later than 15 minutes after scheduled arrival. The average of these percentages for 12 months last year was 76.5%. These data become available as soon as feasible. However, the airlines can provide preliminary results by obtaining a sample. The accompanying data contains the sample data indicating the number of minutes after scheduled arrival time that the aircraft arrived. Note that a negative entry indicates the minutes earlier than the scheduled arrival time that the aircraft arrived. Complete parts a through c below. Click the icon to view the table of arrivial times. a. Calculate the proportion of sampled airline flights that landed within 15 minutes of scheduled arrival. (Round to three decimal places as needed.) b. Calculate the probability that a sampled proportion of on-time flights would be within 1 0.06 of a population proportion equal to 0.765. (Round to four decimal places as needed.) c. If the airlines' goal was to attain the same proportion of on-time arrivals as the previous year, do the preliminary results indicate that they have met this goal? Support your assertions. A. The sample proportion is contained in the interval found in part b. There is a small chance that a sample proportion would be contained in this interval given O) B. The sample proportion is contained in the interval found in part b. There is a large chance that a sample proportion would be contained in this interval given the population proportion is still 0.765. the population proportion is still 0.765. O C. The sample proportion is outside the interval found in part b. There is a small chance that a sample proportion would be outside this interval given the D. The sample proportion is outside the interval found in part b. There is a large chance that a sample proportion would be outside this interval given the population proportion is still 0.765. population proportion is still 0.765.X Data Table Arrival Time Arrival Time Arrival Time Arrival Time Full data table: Arrival Time 12 - 15 - 17 - 24 15 - 20 20 15 13 21 - 17 18 -5 48 - 11 - 10 - 14 10 - 21 -5 - 10 23 10 -2 14 50 6 -9 37 40 40 11 - 15 15 11 12 - 1 18 15 19 - 2 - 19 27 26 18 -1 - 23 - 20 - 3 9 5 33 -7 7 23 15 13 - 12 Print Done

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Geometry From Euclid To Knots

Authors: Saul Stahl

1st Edition

0486134989, 9780486134987

More Books

Students also viewed these Mathematics questions

Question

List six habits that can help you become a more positive thinker.

Answered: 1 week ago