Hi: I need help with this problem.. I am having the hardest timefiguring it out.

Question

Hi:

I need help with this problem.. I am having the hardest timefiguring it out...I am not strong in statistics.
I would appreciate to learn the steps to complete it.

Two men begin a special program to gain weight. The first weighs132 and is n a age and body-type group for which the mean weight is150 pounds with a standard deviation of 12 pounds. The secondweighs 147 and is in an age and body type group for which the meanweight is 168 pounds with standard deviation being 17 pounds.

Which of the two is more seriously underweight as they begin theprogram?

I appreciate any help

Explanation / Answer

where x is the weight of the person
(x-mean)/(standard deviation)=z score The first weighs 132 and is n a age and body-type group forwhich the mean weight is 150 pounds with a standard deviation of 12pounds. (132-150)/(12)=z score -1.5=z The second weighs 147 and is in an age and body type group forwhich the mean weight is 168 pounds with standard deviation being17 pounds. (147-168)/(17)=z score -1.23=z Which of the two is more seriously underweight as they beginthe program? The first one because he has the lower z score
(x-mean)/(standard deviation)=z score The first weighs 132 and is n a age and body-type group forwhich the mean weight is 150 pounds with a standard deviation of 12pounds. (132-150)/(12)=z score -1.5=z The second weighs 147 and is in an age and body type group forwhich the mean weight is 168 pounds with standard deviation being17 pounds. (147-168)/(17)=z score -1.23=z Which of the two is more seriously underweight as they beginthe program? The first one because he has the lower z score

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