Erik Red is a player for the Arizona Snowflakes in the National Foosball League. The league has 27 teams, each with 72 players. Every week, 10 players per team are chosen for random drug testing. What is the expected number of players who are chosen for random drug testing at least 5 times in the first 9 weeks of the foosball season?   7.7628

A bag contains 30 mars bars and 20 snickers. You reach in the bag and randomly select a bunch of chocolates bars. How many chocolate bars should you pick from the bag in order for the expected number of mars you get will be 6? 07 10 8. 6. SAMSUNG DII & % 7 5

Calculate the number of permutations, given n = 11 and r = 4.  720  1,680  5,040  7,920

You want to examine the relationship between dropping out of high school and delinquency. You have a random sample of 11 students. You have the number of delinquent offenses that each student reported committing in the year before and after dropping out of school. The following table shows the data. Student Before dropping out After dropping out 1 5 7 2 9 5 3 2 3 4 7 7 5 8 11 6 11 13 7 8 4 8 8 10 9 5 7 10 2 1 11 9 3 From performing a hypothesis test to determine if the mean number of delinquent differs after dropping out, what is the obtained t?