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Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition | ISBN: 9780073386102 | Authors: Allan G Bluman Professor Emeritus
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Airlines On-Time Arrivals The percentages of ontime

Chapter 9, Problem 16

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QUESTION:

Airlines On-Time Arrivals The percentages of ontime arrivals for major U.S. airlines range from 68.6 to 91.1. Two regional airlines were surveyed with the following results. At a _ 0.01 is there a difference in proportions? Airline A Airline B No. of flights 300 250 No. of on-time flights 213 185 Source: New York Times Almanac.

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QUESTION:

Airlines On-Time Arrivals The percentages of ontime arrivals for major U.S. airlines range from 68.6 to 91.1. Two regional airlines were surveyed with the following results. At a _ 0.01 is there a difference in proportions? Airline A Airline B No. of flights 300 250 No. of on-time flights 213 185 Source: New York Times Almanac.

ANSWER:

Step 1 of 5

Following information about the arrival of two regional airlines is given:

At , we need to test whether there is any difference in the proportions.

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