you guys have all been very very helpful! thank you so much. and if anyone wants the fg for helping just let me know, or I got a few more problems i wouldnt mind a sharp eye looking over and can send fg your way aswell!
http://i.imgur.com/VQsUDIn.pnghere is my work:
A) 1360 / 4000 = .34
The percentage of orders from catalog users is 34% of total orders.
B ) 1826 + 33 / 4000 = .465
The percentage of orders from email or are major purchases are about 46.5% of total orders
C) The events are dependent. (this was a guess, wasn't sure how to determine on this one)
I understand the concept of dependent and independent but not sure how to determine with more complex examples as opposed to A B C > A pulled out w/o replacement > B C are left to pick.
You're correct on all of these, although it may not match the book answer correctly because they screwed up the math in their data table somewhere....major column adds up to 46 and not 56 like this table has...not sure how that is going to affect their answer. For dependent vs independent just look at percentages of each, and percentage of them both combined as the previous two people explained.