the heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. men the same age have mean height 69.3 inches with standard deviation 2.8 inches.

The authors use the word “backbone” in lines 3 and 39 to indicate that

31. all the following are effective ways of preparing for an interview except practicing in front on a mirror writing down answers to possible questions holding a mock interview with a friend memorizing interview questions and answers

What is the marginal cost of producing a fifth soccer net? $1.00 $1.50 $2.00 $2.50 the chart says soccer nets per day 1 2 3 4 5 total cost $7 $9 $10 $11 $13 marginal cost $7 $2 $1 ? ?