Question

Male and female populations of tortoises under 80 years old are represented by age in the table below. Complete parts​ (a) through​ (d).

Age Males Females ​0-9 15 9 ​10-19 12 10 ​20-29 16 16 ​30-39 19 15 ​40-49 24 21 ​50-59 23 22 ​60-69 19 20 ​70-79 12 15

​(a) Approximate the population mean and standard deviation of age for males. muequals nothing years ​(Round to two decimal places as​ needed.) sigmaequals nothing years ​(Round to two decimal places as​ needed.) ​(b) Approximate the population mean and standard deviation of age for females. muequals nothing years ​(Round to two decimal places as​ needed.) sigmaequals nothing years ​(Round to two decimal places as​ needed.) ​(c) Which gender has the higher mean​ age? ▼ Neither Males Females have the higher mean age. ​(d) Which gender has the higher dispersion in​ age? ▼ Males Females Neither have the greater dispersion.

Answer 1

a)

population mean = 40.93

σ = 21.05

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b) for females-

population mean, µ=44.03

σ = 20.72

c) males have higher mean

d) males have greater dispersion