Question 6. For a sample of 10 observations of two independent variables X and Y, we give =5 andy 10. The value of Exy is:a) 50b) 100c) 500d) 0

Answered: Question 6. For a sample of 10…

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 11 Suppose that for a set of (x,y) data, r = 0.2916. Find the linear correlation coefficient. Do not round. Submit Question
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Question 24 Here is a scatter plot for a set of bivariate data. 80 What would you estimate the correlation coefficient to be? -0.9 -0.6 0 0.6 0.9 > Next Question 00
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A score S is used to predict whether a disease is present. If the score is greater than a threshold value, the corresponding person is classified as ill, otherwise as healthy. Here, the scores S; for 9 persons are given. Furthermore, it is known whether the persons are actually ill (Y, = 1) or not (Yi = 0). The data look as follows: S; | Y; 0.3 0 1.2 1 0.7 0.8 1 0.1 0.4 1 1.1 0 0.2 0 1.4 1 (a) Draw by hand the ROC curve for the given data. Explain your procedure and the calcu- lation methods. (b) Calculate the area under the curve (AUC) by hand. Does this value indicate a good or bad classification? (c) Calculate the partial area under the curve (PAUC) if the specificity is to be at least 0.65. How do you judge this value?
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Normal Probability Plot treponse Versus Fts Residual Ped vale 1. Find the regression equation (write the letter of the right answer (a,b.c. a. Final examination = -4.34 + 0.7222PrelimExamination + 1.3375MidtermExamination b. Final examination = 4.37 + 0.0929PrelimExamination + 0.0987MidtermExamination c. Final examination = -0.99 + 7.77PrelimExamination + 13.54MidtermExamination d. Final examination = -5.36 + 0.631PrelimExamination + 1.438MidtermExamination Percent
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QUESTION 13 The following histogram presents the ages of a sample of CNHS students. The bar corresponds to the class between 20 and 21 is missing. What is the relative frequency of the missing class? 0.3 Relative Frequency 0.25 0.2 0.15- 0.1- 0.05 0 17 18 19 20 21 22 23 24
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QUESTION 2 A survey by marketing students at KU was conducted to consider how many students attend football games regularly during the season. A random sample of 42 students was collected to estimate the proportion of students who regularly attend football games. The sample proportion was found to be 35%. Thirty-five percent is a O a. point estimate O b. sample parameter C. population parameter O d. point estimator

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Question 6. For a sample of 10 observations of two independent variables X and Y, we give =5 an y = 10. The value of Exy is: %3D