Women's pulse rates are normally distributed with a mean of 66.5 beats per minute and a standard deviation of 12.4 beats per minute. What is the z-score for a woman having a pulse rate of 63 beats per minute?

Student's incorrect answer:

Let z =(x-)/

z =((66.5 - 63))/(12.4)

z = 0.282

Identify where the student went wrong when solving the problem above. Show how to correctly calculate the answer using Excel in the area to the right of this text box. Finish the problem by stating how to correctly set up the problem and solve it below.

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