Answered: Find the regression equations between…

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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X 1 2 3 4 5 6 1. Determine if the following tables represent a linear, quadratic, or exponential relationship using finite differences and/or ratios. Show all your work. y 14 19 24 29 34 39 X 0 2 4 6 8 10 y 0 -4 -6 -4 0 6 x y 1 800 2 400 3 200 4 100 5 50 6 25
The data in the table represents the amount of fish in a pond after a set amount of weeks. Week 0 1 2 3 4 5 Fish 12 17 24 30 35 42 If the data continues the same linear trend, how many fish do you expect to be in the pond on week 7? 48 fish 40 fish 60 fish 54 fish
Machine hours and electricity costs for AMK Industries for the past year were as follows: Month January February March April May June July August Machine hours 72 73 77 69 66 71 80 63 Electricity costs $750 $750 $790 $730 $690 $720 $800 $730 Required: Using regression analysis determine the cost function for AMK Industries
F # 40
Cathy makes a single deposit into an account earning 2.5% compounded monthly. After five years the account contains $3057.46.how much did she deposit?
A study was done to look at the relationship between number of vacation days employees take each year and the number of sick days they take each year. The results of the survey are shown below. Vacation Days 5 15 13 3 9 0 3 7 7 14 4 Sick Days 5 5 1 5 4 9 9 6 5 3 9 Use the model to predict the number of sick days taken for an employee who took 3 vacation days this year.Sick Days = ? (Please round your answer to the nearest whole number.) Interpret the slope of the regression line in the context of the question: As x goes up, y goes down. The slope has no practical meaning since a negative number cannot occur with vacation days and sick days. For every additional vacation day taken, employees tend to take on average 0.40 fewer sick days. Interpret the y-intercept in the context of the question: The y-intercept has no practical meaning for this study. If an employee takes no vacation days, then that employee will take 8 sick days. The average number of sick days is…
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How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 6 12 20 26 y 60 95 140 160 189 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? low moderate strong Would you say the correlation is positive or negative? positive negative (c) Use a calculator to verify that x = 67, x2 = 1265, y = 644, y2 = 93,546, and xy = 10,544. Compute r. (Round your answer to three decimal places.) As x increases from 3 to 26 months, does the value of r imply that y should tend to increase or decrease? Explain your answer. Given our value of r, y should…
The table below show data that has been collected from different fields from various farms in a certain valley. The table contains the grams of Raspberries tested and the amount of their Vitamin C content in mg. Find a linear model that express Vitamin C content as a function of the weight of the Raspberries. grams 50 60 70 80 90 100 110 Vitamin C content in mg 9.3 14.3 18.9 23.5 27.5 31.7 36.9 A) Find the regression equation: y = places x + Round your answers to 3 decimal B) Answer the following questions using your un-rounded regression equation. If we test 140 grams of raspberries what is the expected Vitamin C content? nearest tenth) mg (round to the
Use regression analysis on deseasonalized demand to forecast demand in summer 2013. Forecast for summer 2023 ______

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Find the regression equations between Sales and Profit Sales 10 20 30 25 15 18 22 35 42 Profit 22 25 26 10 12 15 16 29 40