A group of researchers found that people prefer YouTube videos that aren't too long, but not too short either. Suppose these researchers determined that the ratings people gave to a video could be approximated by R(t)=20t/t^2 + 100 where t is the length of the video in minutes and R(t) is its rating. What length of video (in minutes) will get the highest rating?

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Q: why wouldnt it be 0.10 since its larger than 0.5?

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Q: Given that SST = 270, R ^ 2 = 0.75 and n = 40 , then the value of SSE is : 76.50 57,50 65.70 67.50

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