# Question: A researcher desires to know whether the typing speed of

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.

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.

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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