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Normal Distribution of Bats

GRE-ZRR51E

The figure below shows a normal distribution with mean $m$ and standard deviation $d$, as well as the approximate percentages according to the regions in the figure.

In a population of 10,000 bats, the wingspan of the bats is approximately normally distributed with a mean of 10 inches and a standard deviation of 4.5 inches.

Approximately how many bats in the population have a wingspan between 10 and 19 inches?

A

$3400$ bats

B

$5500$ bats

C

$4800$ bats

D

$6800$ bats

E

$4000$ bats