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

Age
Males
Females
​0-9
9
5
​10-19
17
7
​20-29
17
14
​30-39
15
18
​40-49
20
20
​50-59
21
2020
​60-69
19
19
​70-79
15
13
.
.
.
Question content area right
Part 1
​(a) Approximate the population mean and standard deviation of age for males.
muμequals=42.59
​(Round to two decimal places as​ needed.)
Part 2