SOLUTION: The following table shows the age distribution of representatives in the US in 2005 under 40 40-49 50-59 60-69 70-79 80 and over 47 151 128

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Question 928180: The following table shows the age distribution of representatives in the US in 2005
under 40 40-49 50-59 60-69 70-79 80 and over
47 151 128 89 12 3
How many representatives were there in the US congress in2005? What percentage of them were at least 70 years old?
I put 12% of them were at least the age of 70 years old. Please help me and tell me why I am wrong.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Re TY: What percentage of them were at least 70 years old? p( ≥ 70) =  100%28%2812%2B3%29%2F430%29

<40          40-49    50-59   60-69   70-79   80 and over         TOT

    47           151        128      89         12           3                  430

100%2815%2F430%29 = 3.49 %