Clark wants to figure how many pens to order for the office. there are 48 workers, and he needs to order one pen for each worker. he knows that for every 3 people who prefer red, there are 9 who prefer blue.

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?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?