A bag contains 6 red balls and 7 green balls. You plan to select 2 balls at random. Determine the probability of selecting 2 green bal The problem is to be done without replacement. Use combinations to determine the probability.

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?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have