On Mr. Caspers debate team at Thunderbird high school, 20% of the students are Sophomores, 35 are juniors and 45% are Seniors. A team member is selected randomly to give the closing argument for the team. sophomore gives the closing argument, A probability of .25 of winning the debate. here gives the closing argument, the probability of winning is .6. If a senior closes, this is the probability of winning is .85

 

* first photo was the wrong one sorrry

 

 

 

= 10.38 26 25 925 b) plast girl | 2nd girl = 14-13 1413+1214 = 10.02 a) p (eat at caretena) = 4a5 = 0.61 805 b) P (ne eats reg. at cafe given 10th gr.). = (he eats reg and is in 10th gr.) (he is in iom gr.) 175/805 175 2 = 0.84 209/803 209 c) if p (10th gr. and eat reg.) = P (he's in 10th gr.) (eat reg.) then they are independent otherwise not So, here 175 * 209 435 800 Y 805 805 So, they are not independent.