1. A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that is takes the secretary to learn to use a new word processing program. The data are shown below. a. Draw a scatter plot. What does it show? b. Compute the value of the correlation coefficient. c. Test the significance of the correlation coefficient at a = 0.1.
1. A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that is takes the secretary to learn to use a new word processing program. The data are shown below. a. Draw a scatter plot. What does it show? b. Compute the value of the correlation coefficient. c. Test the significance of the correlation coefficient at a = 0.1.
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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1. A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that is takes the secretary to learn to use a new word processing program. The data are shown below.
a. Draw a scatter plot . What does it show?
b. Compute the value of the correlation coefficient .
c. Test the significance of the correlation coefficient at a = 0.1.
Transcribed Image Text:Speed, x
48
74
52
79
83
56
85
63
88
74
90
92
Time, y
4
8.
3.5
6.
2.3
2.1
4.5
1.9
1.5
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