Answer:
Here I think you need to do $15-50%=7.5 and $10-50=5
32 sweatshirts
Step-by-step explanation:
profit per sweatshirt 28-13=$15
475/15=31.66667
x = 7
123 = 17x + 4
123 - 4 = 17x
119 = 17x
119 / 17 = x
7 = x
17+7+4=28
17+7=24
24 out of 28
stratified sample
mean - 12.5
SD - 12.0