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Question

The histogram shows the birth weights of 100 newborn babies.
Babies who weigh less than 5 lb are considered to have a low birth weight.
Babies who weigh 10 lb or more are considered to have a high birth weight.
Scale:
On X axis - 1cm = 5 lb
On Y axis - 1cm = 5 units

What percent of the babies had neither a low or a high birth weight?

[image]


A
83%
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B
91%
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C
85%
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D
97%
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Solution

The correct options are
B 91%

Given,
Scale:
On X axis - 1cm = 5 lb
On Y axis - 1 cm = 5 unit
So each division of that 1cm on X and Y axis = 1 unit

The total number of babies is 100.
2 babies (yellow) or 2% had a low birth weight.

Babies who weigh 10 lb or more are considered to have a high birth weight.
light blue - 6 and orange - 1
7 babies or 7% had a high birth weight.

Therefore, percentage of the babies had neither a low or a high birth weight is:
total - babies having low and high birth weight
= 100% − (2% + 7%)
= 91%


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