The age distribution of prisoners on death row in Florida has mean 48.4 years and standard deviation 11.0 years.

a. Assuming the distribution is normally distributed, find the probability that a randomly selected death-row prisoner in Florida is

i. Between 40 and 60 years of age.

ii. Between 30 and 70 years of age.

iii. Less than 30 years of age.

b. A density histogram of the ages is shown in Fig. 90.

Describe the shape of the distribution.

c. Use the density histogram to estimate the probability that a randomly selected death-row prisoner in Florida is

i. Between 40 and 60 years of age.

ii. Between 30 and 70 years of age.

iii. Less than 30 years of age.

d. Compare the results you found in part (c) with the results you found in part (a). On the basis of your comparison and your response to part (b), determine whether the distribution is approximately normal.

Transcribed Image Text:

Ages of Death-Row Prisoners 0.04 0.03 0.02 0.01 0.32 0.30 0.17 0.14 0.05 30 40 50 60 70 80 Age (years)