Answered: True or false: In a Time-series plot,…

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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Question 9 Student Enrollment The enrollment at a local business school has been decreasing linearly. In 2001, there where 890 students enrolled. By 2008, there were only 575 students enrolled. Determine the average rate of change of the school's enrollment during this time period, and write a sentence explaining its meaning. The average rate of change = The enrollment at the business school has been Select an answer at a rate of Question Help: Video Submit Question Jump to Answer Increase or Decrease? Select an answer Select an answer 315 in 7 years students yearly students per year.
help
Violent crime rates in the United States are shown in the table for various years. Year Number of Violent Crimes per 100,00 people 1990 730 1995 685 2000 507 2005 469 2009 432 2016 386 (a) Find a linear model for f(a). Round all numbers to 3 decimal places.
Inflation 2011 The Consumer Price Index (CPI) tracksthe prices of consumer goods in the United States, asshown in the following table. The CPI is reportedmonthly, but we can look at selected values. The tableshows the January CPI at five-year intervals. It indicates,for example, that the average item costing $17.90 in 1926cost $220.22 in the year 2011.a) Make a scatterplot showing the trend in consumerprices. Describe what you see.b) Be an economic forecaster: Project increases in thecost of living over the next decade. Justify decisionsyou make in creating your model.
b and c part
A new CD player costs 3,000, if the value of the equipment depreciates annually with a geometric progression and the CD player's value in year 4 is 1,500. Calculate the value of the CD player in year 2 O $11905.99999 O$ 11 905.50789 O $11 904.99888 O $11 904.50789
Government agencies keep data about the income distribution of the population. The Garcia family and Wood family live in a county with 6000 families. The Garcia family's income is at the 38 percentile. The Wood family's income is at the 73 th percentile. (If necessary, consult a list of formulas.) (a) Which of the following must be true about the Garcia family's and the Wood family's incomes? Both the Garcia family and the Wood family earn more than the median income. Both the Garcia family and the Wood family earn less than the median income. O The Wood family earns more than the Garcia family. O The Garcia family earns more than the Wood family. (b) Which of the following must be true about the Garcia family's income? O About 38% of the families in their county earn less than the Garcia family. O The Garcia family earns about 38% of the highest income in their county. O The Garcia family's income is in the top half of incomes in their county. O The Garcia family earns $38,000.
For a given interest rate, simple interest varies jointly as the principal and time. If $3000 left in an account for 6 years earned interest of $1080, then how much interest would be earned in 7 years? Question content area bottom Part 1 The amount of interest earned in 7 years would be $enter your response here. (Type an integer or a decimal.)

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True or false: In a Time-series plot, the vertical axis represents time.