Which pattern follows the rule "subtract 4"?

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

How do you convert 1.27 to a percentage

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i