Question

A researcher desires to know whether the typing speed of a secretary (in words per minute)...

A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that it takes the secretary to learn to use a new word processing program. The data are shown.

Speed x Time y
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.

Compute the value of the correlation coefficient.

Select one:

a. .9439.

b. -.9490.

c. -.9742.

d. .5136.

Math   Statistics-And-Probability   
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