I am stuck on a series of problems relating to mothersage - First question is if

Question

I am stuck on a series of problems relating to mothersage - First question is if we select a birth at random, what is theprobability the mother is 19 years or younger?                          Table Age                 10-14     15-19     20- 29      30-39     40-44       45-49 Age mid point   12.5       17.5       25              35         42.5         47.5            Pr(X=x)          0.003     0.100     0.500      0.300     0.097      0.000*         Please anyinformation on how to set up these type of problems would beappreciated. I am stuck on a series of problems relating to mothersage - First question is if we select a birth at random, what is theprobability the mother is 19 years or younger?                          Table Age                 10-14     15-19     20- 29      30-39     40-44       45-49 Age mid point   12.5       17.5       25              35         42.5         47.5            Pr(X=x)          0.003     0.100     0.500      0.300     0.097      0.000*         Please anyinformation on how to set up these type of problems would beappreciated.

Explanation / Answer

Probability that the mother is 19 years or younger is theprobability that the mother is 15-19 years old plus the probabilitythe mother is 10-14 years old. So: P(mother is 19 years or younger)=P(mother is 15-19 yearsold)+P(mother is 10-14 years old)=0.100+0.003=0.103 I hope this helps.

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