An observational study is conducted to investigate the association between age and cholesterol. The correlation
is estimated at r=0.35. The study involves n=125 participants. The mean age is 44.3(10.0)years with an age range of 35-55 years, while the mean (std dev) total chol. is 202.8(38.4) Based on the regression equation Y=143.4+1.34x, estimate the cholesterol for a 45 yo person.