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MATLAB: An Introduction with Applications
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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Instructions. Read the problems carefully. For hypothesis testing, follow the 5-step procedure. For correlation and regression, show your complete solutions and box your final answers. Write your answers on a clean sheet of Paper. Scan or take a photo of your work and submit it in PDF format. 1. 2. A random survey of 75 death row inmates revealed that the mean time on death row is 17.4 years with a standard deviation of 6.3 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years. (Use a=0.01) The mean speeds of fastball pitches from two baseball pitchers will be compared. A sample of 14 fastball pitches is measured from each pitcher. Scouters believe that Rodriguez pitches a speedier fastball. Do the data support the claim at a=0.05? A. Pitcher Wesley Rodriguez B. x X 3. A random sample of five professional athletes produced the following data: x is the player's number of endorsements, and y is the amount of money made (in millions of dollars). 0 3 2 1 5 86 91 y S 2 8 7 3 13 3 7 Compute the Pearson r and identify if it has (1) strong or weak relationship and (2) a positive or negative relationship. Identify the slope (b) and y' intercept (a), and then construct the equation of the regression line (y'=a + bx).
Transcribed Image Text:Instructions. Read the problems carefully. For hypothesis testing, follow the 5-step procedure. For correlation and regression, show your complete solutions and box your final answers. Write your answers on a clean sheet of Paper. Scan or take a photo of your work and submit it in PDF format. 1. 2. A random survey of 75 death row inmates revealed that the mean time on death row is 17.4 years with a standard deviation of 6.3 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years. (Use a=0.01) The mean speeds of fastball pitches from two baseball pitchers will be compared. A sample of 14 fastball pitches is measured from each pitcher. Scouters believe that Rodriguez pitches a speedier fastball. Do the data support the claim at a=0.05? A. Pitcher Wesley Rodriguez B. x X 3. A random sample of five professional athletes produced the following data: x is the player's number of endorsements, and y is the amount of money made (in millions of dollars). 0 3 2 1 5 86 91 y S 2 8 7 3 13 3 7 Compute the Pearson r and identify if it has (1) strong or weak relationship and (2) a positive or negative relationship. Identify the slope (b) and y' intercept (a), and then construct the equation of the regression line (y'=a + bx).
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