3. Calculate.
a) 0 - 9 =

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?

This is so hard and it’s for a test

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x