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(Solved): 12. The following table gives the number of pedestrians, classified according to age group and sex, ...
12. The following table gives the number of pedestrians, classified according to age group and sex, killed in fatal road accidents in England in \( 1922 . \) a. Approximate the sample means of the ages of the males. b. Approximate the sample means of the ages of the females. c. Approximate the quartiles of the males killed. d. Approximate the quartiles of the females killed.
Expert Answer
Answer : ( R-Code) # Data lower_limit = c(0,5,10,15,20,30,40,50,60,70,80) upper_limit = c(5,10,15,20,30,40,50,60,70,80,100) #mid-point xi = (upper_limit+lower_limit)/2 xi # Number of males no_of_males = c(120,184,44,24,23,50,60,102,167,150,49) # Numb