biostat-manual.pc x + D:/PMMEH/FIRST%20YEAR/SEMESTER%201/epidemiology%20and%20biostatistics/BIOSTATISTICS/vdocument.i... (Not syncing ... + 21816 8 EXERCISE 1. Suppose the average length of stay in a chronic disease hospital of a certain type of patient is 60 days with a standard deviation of 15. If it is reasonable to assume an approximately normal distribution of lengths of stay, Find the probability that a randomly selected patient from this group will have a length of stay : a) Greater than 50 days. b) Less than 30 days. c) Between 30 and 50. I d) Greater than 90 days. 2. If the total cholesterol values for a certain popul a are approximately normally distributed with a mean of 200 mg/100 ml and a standard deviation 20mg/100 ml, Find the probability that an individual picked at random from this population will have a cholesterol value: a) Between 180 and 200 mg/100 ml. b) Greater than 225 mg/100 ml. c) Less than 150 mg/100 ml d) Between 190 and 210 mg/100 ml. 11:59 32. C ENG 06/12/2022 O m o search hp $12 Insert prt sc 19 144 110 11 1+