Answered: Round your answers to 3 decimal places.…

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 weight (x) and systolic blood pressure (y) of 26 randomly selected males in the age group 25 to 30 are shown in the following table. Assume that weight and blood pressure are jointly normally distributed. Subject Weight Systolic BP 1 165 130 2 167 133 3 180 150 4 155 128 5 212 151 6 175 146 7 190 150 8 210 140 9 200 148 10 149 125 11 158 133 12 169 135 13 170 150 14 172 153 15 159 128 16 168 132 17 174 149 18 183 158 19 215 150 20 195 163 21 180 156 22 143 124 23 240 170 24 235 165 25 192 160 26 187 159

Round your answers to 3 decimal places.
(a) Estimate the correlation coefficient.
0.773
(b) Test the hypothesis that Ho: p = 0 against H: p + 0 with a = 0.10.
Reject the null hypothesis.
(c) Test the hypothesis that Ho: p = 0.73 against H1: e + 0.73 with a = 0.10.
Reject the null hypothesis.
(d) Construct a 90% confidence interval for the correlation coefficient.
i

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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