Is 4: 7 and 16: 28 equivalent ratios?

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?

Anyone know? will mark brainliest if you're correct!

It says factor each expression completely 8y+48