Macular degeneration is the most common cause of blindness in people older than 60 years. One variable thought to be related to a type of inflammation associated with this disease is level of a substance called soluble Fas Ligand (sFast) in the blood. The accompanying data are representative values of x = sFast level for 10 patients with age-related macular degeneration. These data are consistent with summary quantities and descriptions of the data given in the paper "Associations of Plasma-Soluble Fas Ligand with Aging and Age-Related Macular Degeneration."t X 0.069 0.074 0.176 0.185 0.216 0.287 0.343 0.343 0.512 0.729 Normal Score -1.547 -1.000 -0.655 -0.375 -0.123 0.123 0.375 0.655 1.000 1.547 In USE SALT(a) Construct a normal probability plot. 1.0 1.0 0.8 0.8 0.6 0.6 sFasL sFasL 0.4 0.4 0.2 0.2 0.0 0.0 T -2 -1 0 1 2 -2 -1 0 1 2 O Normal Score Normal Score 1.0 1.0/ 0.8 0.8 0.6 0.6 sFasL sFast 0.4 0.4- 0.2 0.2 0.0 E 0.0 E -2 -1 0 1 2 -2 -1 0 1 2 O Normal Score Normal Score Does the normal probability plot appear linear or curved? O linear curved O neither(b) Calculate the correlation coefficient for the (normal score, x) pairs. (Round your answer to four decimal places.) Compare this value to the appropriate critical r value from Table 6.2 to determine if it is reasonable to consider the distribution of sFasL levels to be approximately normal. 0 Yes, it is reasonable to consider the distribution of sFasL levels to be approximately normal 0 No, it is not reasonable to consider the distribution of sFasL levels to be approximately normal