Betty correctly answers 30 questions on your math test there are 40 questions on the test what percent of the questions did she answered incorrectly

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?

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

Multiply. write your answer in simplest form. 3/8 x 5/7