Keegan buys a bag of cookies that contains 8 chocolate chip cookies, 7 peanut butter cookies, 5 sugar cookies and 5 oatmeal raisin cookies. What is the probability that Keegan randomly selects an
oatmeal raisin cookie from the bag, eats it, then randomly selects another oatmeal raisin cookie?
Express your answer as a reduced fraction.
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What is the pattern in the values as the exponents increase?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.