Jack Crash Craddock, the chief analyst for the Federal Aviation Administration, wants to know whether airline deregulation
Question:
Jack “Crash” Craddock, the chief analyst for the Federal Aviation Administration, wants to know whether airline deregulation had any impact on airline safety. As a measure of airline safety, he uses the number of near misses (a near miss is when planes come within a certain number of feet of each other) for each year. Using data from 1965 to 2000, Craddock collects the following independent variables: X1, a countervariable coded 1 in 1960 and increasing by 1 each year; X2, a longterm impact variable coded 0 before deregulation (1978) and increasing by 1 each year thereafter; and X3, a control for the state of the economy—percentage growth in gross national product over the previous year (people fl y more during good economic times). A regression shows the following:
Interpret the slopes, intercept, and coefficient of determination. Test each slope for significance. What can you say about airline deregulation?
Step by Step Answer:
Applied Statistics For Public And Nonprofit Administration
ISBN: 9781111342807
8th Edition
Authors: Kenneth J. Meier, Jeffrey L. Brudney, John Bohte