Modeling Public debt of the United States The interest paid on the public debt of the United
Question:
Modeling Public debt of the United States The interest paid on the public debt of the United States of America as a percent of federal expenditures for selected years is shown in the following table.
If t is the number of years past 1900, use the table to complete the following.
(a) Use the data in the table to find a fourth-degree function d(t) that models the percent of federal expenditures devoted to payment of interest on the public debt.
(b) Use d(t) to predict the percent of federal expenditures devoted to payment of interest in 2009.
(c) Calculate
(d) Can d(t) be used to predict the percent of federal expenditures devoted to payment of interest on the public debt for large values of t? Explain.
(e) For what years can you guarantee that d(t) cannot be used to predict the percent of federal expenditures devoted to payment of interest on the public debt? Explain.
Introduction to Probability and Statistics
ISBN: 978-1133103752
14th edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver