Supplementary Exercises 159 73. The days to maturity for a sample of five money market funds are shown here. The dollar amounts invested in the funds are provided. Use the weighted mean to determine the mean number of days to maturity for dollars invested in these five money market funds. Days to Maturity Dollar Value (Smillions) 20 20 12 30 10 15 10 74. Automobiles traveling on a road with a posted speed limit of 55 miles per hour are checked for speed by a state police radar system. Following is a frequency distribution of speeds. Speed (miles per hour) Frequency 45-49 10 50-54 40 55-59 150 175 60-64 65-69 75 70-74 75-79 15 10 Total 475 What is the mean speed of the automobiles traveling on this road? b. Compute the variance and the standard deviation. a. 75. The Panama Railroad Company was established in 1850 to construct a railroad across the isthmus that would allow fast and easy access between the Atlantic and Pacific Oceans. The following table (The Big Ditch, Mauer and Yu, 2011) provides annual returns for Panama Railroad stock from 1853 through 1880. Return on Panama Railroad Year Company Stock (%) 1853

Supplementary Exercises 159 73. The days to maturity for a sample of five money market funds are shown here. The dollar amounts invested in the funds are provided. Use the weighted mean to determine the mean number of days to maturity for dollars invested in these five money market funds. Days to Maturity Dollar Value (Smillions) 20 20 12 30 10 15 10 74. Automobiles traveling on a road with a posted speed limit of 55 miles per hour are checked for speed by a state police radar system. Following is a frequency distribution of speeds. Speed (miles per hour) Frequency 45-49 10 50-54 40 55-59 150 175 60-64 65-69 75 70-74 75-79 15 10 Total 475 What is the mean speed of the automobiles traveling on this road? b. Compute the variance and the standard deviation. a. 75. The Panama Railroad Company was established in 1850 to construct a railroad across the isthmus that would allow fast and easy access between the Atlantic and Pacific Oceans. The following table (The Big Ditch, Mauer and Yu, 2011) provides annual returns for Panama Railroad stock from 1853 through 1880. Return on Panama Railroad Year Company Stock (%) 1853

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Tres is 2 years younger than Raul. Twenty years ago, Raul's age was 13 5 points years more than half the age of Tres. How old is Tres now? * 11