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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.
A researcher desires to know whether the typing speed of
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.
Do a complete regression analysis by performing the following steps.
a. Draw the scatter plot.
b. Compute the value of the correlation coefficient.
c. Test the significance of the correlation coefficient at α = 0.01, using Table I.
d. Determine the regression line equation.
e. Plot the regression line on the scatter plot.
f. Predict y€™ for a specific value of x.
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