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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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Question

The following table shows students' test scores on the first two tests in an introductory calculus class.
Calculus Test Scores
First
68 79 69 67 54 84 45 86 70 55 75 70
test, x
Second
45 67
66
65
70 55
50
74
45
65
58
test, y
Copy Data
Step 2 of 2: If a student scored a 78 on his first test, make a prediction for his score on the second test. Assume the regression equation is appropriate for prediction.
Round your answer to two decimal places, if necessary.

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Please answer with explanation. I will really upvote
Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary. x 2 4 5 6 y 7 11 13 20
Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary.
Use the given data to do the following: a. Find the regression equation for the data points. b.Graph the regression equation and the data points. Find the regression equation for the data points. y= (Round to two decimal places as needed.)
Solve for the y-intercept and the slope. Form the equation of the regression line that describes the relationship between the two variables. Predict the profit of the fashion boutique business when the store measures 3,800 square feet. Explain the result.
2. Participants were kept awake for a certain number of hours before given a visuospatial task. Researchers measured how many correct responses each participant had. Results are shown below. Use alpha = .01. Number of Correct Hours Kept Awake (X) Responses (Y) 21 X = 10 SS, = 422 Y = 10 SS, = 690 2 4 19 %3D 6. 13 SPxy =-525 ху 5 20 S, =5.70 S, = 7.29 9. 11 10 9. 14 5 15 5 17 2 18 1 17 1 13 4 18 8 11 A. Graph the data. B. State the hypotheses. C. Make a decision about the null. a. Calculate Pearson's r i. Decision about null hypothesis? b. Calculate effect size i. Interpret effect size. D. State your conclusion. E. Relate your conclusion to the research. F. Calculate the regression formula. G. If someone was kept awake for 9 hours, what is the predicted number of correct responses?

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