The answer is "80 mice"
Step-by-step explanation:
In the given question, the attachment is missing, that is attached with the answer.
Formula:
![\ areas \ of \ rectangle \ = \ base \times height](/tpl/images/0651/6522/c45fc.png)
When range in between 6-10 So,
base =4
height= 3
area = 4×3 =12 Â
When range in between 10-12 So,
base =2
height= 8
area = 2 × 8 =16
When range in between 12-14 So,
base =2
height= 11
area = 2 × 11 = 22
When range in between 14-15 So,
base =1
height= 23
area = 1 × 23 =23
When range in between 15-16 So,
base =1
height= 19
area = 1 × 19 =19
When range in between 16-20 So,
base =4
height= 2
area = 4 × 2 =8
Formula:
weight which below from 10 g  =  ![\frac{ \ rectangle \ area \ from 6-10}{ \ all \ rectangle \ areas} \times 1000](/tpl/images/0651/6522/baa44.png)
                          ![= \frac{ 8 } { 12 + 16 + 22 + 23 + 19 + 8 } * 1000 \\\\= \frac {8}{100} \times 1000\\\\= 8\times 10\\\\= 80](/tpl/images/0651/6522/07da9.png)
weight = 80 mice
![The histogram shows the birth weights of 1000 mice. Frequency density 18 20 6 8 10 12 14 16 Birth we](/tpl/images/0651/6522/e6bfb.jpg)