A researcher believes that the ankle circumference for adult females in Europe can be considered to have a normal distribution with a mean of 20 cm.If his belief is correct which of the following ranges of ankle sizes will have the largest proportion of members of this population?
Select one:
1) 11 to 17 cm
2) 17 to 23 cm
3) 23 to 29 cm
4) It is impossible to tell without the standard deviation.