Answer:
a) 88 mm
b) 83.0 mm
Explanation:
a) By mere observation, the approximated mean finger length is 88 mm
b)The mean is calculated as follows:
[tex]\begin{gathered} \bar{x\text{ }}=\frac{2(60)+7(70)+8(80)+4(90)+4(100)+1(110)+1(120)}{27} \\ \bar{x\text{ }}=\frac{2240}{27} \\ \bar{x\text{ }}=82.96 \end{gathered}[/tex]
The mean = 83.0 mm
