Use the density histogram shown in Figure 4.45, based on the ???? = 200 observations on the variable AGMT contained in the Benign Breast Disease data set, to answer the following:

(a) Describe the shape of the underlying distribution of the variable Age suggested by the histogram in Figure 4.45.

(b) Estimate the primary and secondary modes of the distribution of the variable Age.

(c) Does this histogram support the use of a normal probability model for modeling the distribution of the variable Age? Explain.

Percent 20 15- 10- 5 12 24 24 36 48 60 60 72 Age 13 84 96 96