Posted by **Carma** on Tuesday, September 11, 2007 at 4:25pm.

Standard Deviation of Population and of a Sample

The weight of newborn children in the United States vary according to the normal

distribution with mean 7.7 pounds and standard deviation 1.68 pounds. The government

classifies a newborn as having low birth weight if the weight is less than 5.7 pounds.

a) What is the probability that a baby chosen at random weighs less than 5.7 pounds at

birth?

b) You choose three babies at random. What is the probability that their average birth

weight is less tan 5.7 pounds?

## Answer this Question

## Related Questions

- Math (Statistic) - Considered the sampling distribution of a sample mean ...
- statistics - An SRS of size n is taken from a large population whose ...
- sample size/ standard deviations - How do we compute sample size fluctuations? ...
- statistics - A sample of 25 men has a mean weight of 65kg with standard ...
- statistics - How do we compute sample size fluctuations? Suppose we have a ...
- statistics - what are the mean and standard deviation of a sampling distribution...
- Statistics - This is the first question..... For a population that has a ...
- Statistics - In an essay of 250-500 words, thoroughly address the following ...
- Math - The mean of a sample of 25 was calculated as xbar = 500. The sample was ...
- math - Can I gt some help on these questions! 1.Research subjects that are ...