Question

the histogram shows the birth weights of 100 new born babies. how many babies weighed 8 lb. or more? a 22 b 23 c 30 d 45

Explanation:

Step1: Identify relevant bars

We need to consider bars for 8 - 9, 9 - 10, 10 - 11, 11 - 12 lb weights.

Step2: Read frequencies

The frequency for 8 - 9 lb is 22, for 9 - 10 lb is 15, for 10 - 11 lb is 6, for 11 - 12 lb is 2.

Step3: Calculate sum

$22 + 15+6 + 2=45$

Answer:

D. 45