Biostatistics
posted by Brenda .
if we select a birth at random, what is the probability the mother is 19 years of age or younger

What groups are you considering? What country? What areas of the country? What socioeconomic levels?
More data needed.
Respond to this Question
Similar Questions

statistics
1. If we select a birth at randam, what is the probability the mother is 19 years of age or younger. 2. What is the probability she is 30 years of age or older. 3. What is the expected age of the mother at birth. 4. What is the variance … 
college math  biostatistics
hey... first time user and really lost. wondering if someone can help: Based on data from the Statistical Abstract of the United States, 112th Edition, only about 14% of senior citizens (65 years old or older) get the flu each year. … 
Biostatistics
Age(1014)(1519)(2029)(3039) (4044) Mid 12.5 17.5 25 35 42.5 P(X=x) .003 .100 .500 .300 .097 If we select a birth at random, what is the probability the mother is 19 years or younger? 
statistics
if we select a birth at random, what is thew probability the mother is 19 years of age or younger? 
mathematics
the average age of a family of six is 25 years.The average age of the four children is 15 years.If the father is 2 years older than the mother,calculate the age of the mother. 
statistics
From past experience it is felt that the random variable, X, the age of a mother at the birth of her first child, is normally distributed with a mean of 21.3 and a variance of 16. Find the probability that a randomly selected mother: … 
probability and statistics
the average age for licensed drivers in the country is u=40.3 years with a standard deviation of o= 13.2 years. a. a researcher obtained a random sample of n=16 parking tickets and computed an average age of m=38.9 years for the drivers. … 
statistics
The average age for licensed drivers in the county is μ 40.3 years with a standard deviation of 13.2 years. a. A researcher obtained a random sample of n 16 parking tickets and computed an average age of M 38.9 years … 
Quantitative Analysis for Business
The ages of a group of 50 women are approximately normally distributed with a mean of 48 years and a standard deviation of 5 years. One women is randomly selected from the group, and her age is observed. A) Find the probability that … 
Algebra
Mary is y years old. Write an algebraic expression in terms of y for the age of A) her brother, who is 4 years older. B) her mother, who is 3 times as old. C) her sister, who is 2 years younger.