Suppose research conducted at a secretarial school found that reading speed correlated highly with typing speed after training,and that the regression equation based on the data from this school took the form of Y=25+.25X.A new applicant has a reading speed of 400 words per minute.With training in typing,she will probably learn to type at the rate of _____ words per minute.
A)100
B)125
C)75
D)150

Question

Quizplus · Accepted Answer

Using the regression equation Y=25+.25X, we can plug in the reading speed of the new applicant (X=400) to find the predicted typing speed (Y).

Y= 25 + 0.25(400) = 125

Therefore, the new applicant will probably learn to type at the rate of 125 words per minute with training. The answer is B) 125.

Suppose Research Conducted at a Secretarial School Found That Reading