Answered: The study below shows the typing speed…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

The study below shows the typing speed of a secretary (in words per minute) and the
time (in hours) that it takes the secretary to learn to use a new word processing
program.
Speed Time
48 7
74 4
52 8
79 3.5
83 2
56 6
85 2.3
63 5
88 2.1
74 4.5
90 1.9
92 1.5
If there is a significant relationship, predict the time it will take the average secretary
who has a typing speed of 72 words per minute to learn the word processing program.
a. Compute the value of correlation of coefficient, r and comment.
b. Test the significance of the correlation coefficient at ? = 0.01, using Table I.
c. Find the regression line equation.
d. Plot scatter plot and draw the best fit line by using the regression line equation you
obtained in (c).
e. Find the standard error of the estimate.
f. Predict the typing speed of a secretary (in words per minute) if he/she takes 1 hour
to learn to use a new word processing program.