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.

Transcribed Image Text:

Speed 48 74 52 79 83 56 85 63 88 74 90 92 Timey 7 4 8 3.5 2 6 2.3 5 2.1 4.5 1.95