week 5 task 10 (business statistics)

Project Description:

i have attached an excel document that these 3 questions need to be answered in. please note that these tasks must show formulas, how you got the answer, and etc. please no pictures, no plagiarism. i do have answers to some of them, however i am having a difficult time showing the answers...the hard part is using the formulas to show how you got to the answer...setting up the problem is the most important.
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