Male and female populations of elephants under 80 years old are represented by age in the table below.

(a) Approximate the population mean and standard deviation of age for males.

? = ________

(round to two decimal places as needed.)

? = _________

(round to two decimal places as needed.)

(b) Approximate the population mean and standard deviation of age for females.

? = ___________

(round to two decimal places as needed.)

? = _________

(round to two decimal places as needed.)

(c) Which gender has the higher mean age?

____________ have the higher mean age.

(d) Which gender has the higher dispersion in age?

_________ have the greater dispersion.

Age 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 Males 15 10 18 15 23 21 19 15 Females 6 10 17 17 22 20 15 13