Some Delicate Fabrics Are Natural Silks, Made of Protein and Biodegradable

Essay

Some delicate fabrics are natural silks, made of protein and biodegradable. It would be beneficial to be able to assess the delicacy of a fabric before
making decisions about displaying it in a museum. Chemical analysis might give some evidence about the brittle nature of a fabric. Biochemical data were acquired from the linings of sixteen 19th and early 20th century Japanese
kimonos. Investigators measured the concentration of certain amino acids (“Amino acid ratio”) as well as the breaking stress (“tenacity”) of the 16 kimono fabrics.




-a) What is the equation of the least-squaresline for predicting tenacity using aminob) Graph the least squares best fit line on the scatter plotthat appears on .
c) Approximately what proportion of the variability inacid ratio tenacity is explained by the linear relationship between tenacity and the amino acid ratio?