Llesson check 1. kama cuts a length of ribbon into 4 equiv pieces each 1 feet long how long as the ribbon?

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?

Is this a polynomial function? i need to know asap

Twelve less than a number is at most 20