check my work?

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hi jack,

i just finished 2 tasks from a "simple linear regression" chapter, a total of 6 problems. can you check my work, please, and offer any suggestions? i've attached 3 files: the 2 tasks (excel) and one word doc with some explanations and the requirements. on the excel sheets, my answers are in red and on the word doc what i am unsure of is in red. on the "case study" excel sheet, my answers are on the "_25m" tab. take your time, 2-3 days is fine. i'll be up for another half-hour or so. if i don't hear from you by then i'll look for your price tomorrow. (i'm in the middle east)

thanks, jack.
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