Five million, forty-three thousand, two hundred ninety-nine in numbers

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?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

What is the sum of these mixed numbers 4 2/3+ 3 1/9