2. For the women age 18-24 in the Health and Nutrition Examination survey of 1976-80, the...
2. For the women age 18-24 in the Health and Nutrition Examination survey of 1976-80, the average weight was about 134 pounds; and the standard deviation was about 27 pounds. The weight follows a normal curve.
a) (1 point) What do we mean by saying the weight “follows a normal curve”? In other words, how would you describe a normal curve?
b) (1.5 points) Using the normal curve, estimate the percentage of women with weight:
(i) below 134 pounds
(ii) between 100 and 150 pounds
(iii) above 150 pounds
Note: Use the z-score table
Econometrix
Homework Answers
a) When we say that the weight follows a normal curve, this means that the distribution of weight is a nice symmetrical distribution on both sides of the mean. The normal curve is like a bell-shaped curve with symmetry on both sides of the mean.
b)
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