First time here, more frequent over at StackOverflow. So not sure if calculator questions are accepted here, but I'll ask.
Is there a quick way to solve problems like this in the ti-83:
82% shot success rate out of 7 shots taken, find odds of exactly 3 shots going in, more than 5 shots going in. (I know how to do the written out way using nCr but it would save time on the exam if I knew a faster way).
Lets say 10% of people pay $\$$30, 70% pay $\$$52, and 20% pay $\$$60. Is there a way to get the mean and standard deviation of that by modifying the stats on ti-83 (I know, very easy mean is (.1*30)+... just wondering if there a way without entering 30 1 time and 52 7 times and so on in L1 then calculating the 1 var stats.