4. (CSI or NSCI) One of the methods forensic investigators use for estimating the age at death of a human, or the age of a living individual (for example for legal reasons or to verify identity) is based on measurement of the biochemical changes in amino acids within the teeth or bones. As bones and teeth age the ratio (R/L) of two amino acids, denoted simply as R and L, increases. The biochemical changes that occur over time in these amino acids follow an exponential law. The age t, in years, can be E estimated from (R/L) using the equation t 2 b0 + blLN (ELL) , where LN denotes 1% the natural logarithm (logarithm base e). This Excel le Age at death in the hw 8 information on our class webpage has data on the ratio (R/L) from the teeth of human subjects of known age. a. Use the data to nd the intercept b0 and slope b1 of the least squares prediction A E equationt 2 be + blLN (PrL). R 1: b. While tending to his ower garden, Sherlock Holmes discovers a body buried in his backyard. Forensic analysis yields the value 0.045 for the ratio %. Use the least squares prediction equation to estimate the age of Sherlock Holmes' surprise garden visitor. 0. Several years ago a man in Sherlock Holmes's neighborhood mysteriously disappeared. At the time of the disappearance the man was 35 years old. Do you think that this is the body of that man? Use a 95% prediction interval to answer the