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269 Weekly Monthly 274 Couple times a year 143 Don't track 52 274 969; 0.283 231 969: 0.238 969; 0.278 143 969;0.148

269 Weekly Monthly 274 Couple times a year 143 Don't track 52 274 969; 0.283 231 969: 0.238 969; 0.278 143 969;0.148

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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Recently, the stock market took big swings up and down. A survey of 969 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio weekly? Express your answer as a simplified fraction and as a decimal rounded to three decimal places. How frequently? Response Daily O 231 269 274 Couple times a year 143 Don't track 52 Weekly Monthly 274 969 231 969 269 969 143 969 ;0.283 ;0.238 ;0.278 ;0.148
Transcribed Image Text:Recently, the stock market took big swings up and down. A survey of 969 adult investors asked how often they tracked their portfolio. The table shows the investor responses. What is the probability that an adult investor tracks his or her portfolio weekly? Express your answer as a simplified fraction and as a decimal rounded to three decimal places. How frequently? Response Daily O 231 269 274 Couple times a year 143 Don't track 52 Weekly Monthly 274 969 231 969 269 969 143 969 ;0.283 ;0.238 ;0.278 ;0.148
Use the linear correlation coefficient given to determine the coefficient of determination, r². r = -0.8426 r² = -71.08% r² = 71.08% r² = -91.79% r² = 91.79%
Transcribed Image Text:Use the linear correlation coefficient given to determine the coefficient of determination, r². r = -0.8426 r² = -71.08% r² = 71.08% r² = -91.79% r² = 91.79%
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