In Keno, there are 80 balls numbered from 1 to 80, and 20 are drawn at random. If you play a double-number, you win if both n u - n . - - ' - - .ys 11 to 1. and you have very close to a 6% chance of winning. If you play 100 times and stake $1 on a double-number each time, your net gain will be arou J [55'9\"] , give or take -$25 [Select] V or 50. $23 -$66 $0 In Keno, there are 80 balls numbered from 1 to 80, and 20 are drawn at random. If you play a double-number. you win if both numbers are chosen. This bet pays 11 to 1, and you have very close to a 6% chance of winning. lfyou play 100 times and stake $1 on a double-number each time, your net gain will be around [Select] V , give or take J [Select] 0 $23 -$66 $66 I) -sza 5 pts 3 Question 15 5 pts 80% of the students in a university are under 21 years old. What is the chance that a random sample of 400 students will contain fewer than 312 students that are under 21 years old? 0 About 68% 0 About 32% 0 About 50% 0 About 5% 0 About 15%