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an observational study is conducted to investigate the association between age and total serum cholesterol. The...

an observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r= 0.35. The study involves n= 125 participants. The mean (std dev) age is 44.3 (10.0) years with an age range of 35 to 55 years, while the mean (std dev) total cholesterol is 202.8 (38.4). Based on the regression equation below, estimate the total serum cholesterol for a 50-year-old person. y=143.4+1.34x
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solution Here x is age s y is serum cholesterol. the given regression equation is - y =143-1 + 1.30 a for the age (2) = 50 th

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