This isn't a homework question but I'm trying to help a friend figure it out. If you have an 85% chance of Event A happening, but if it doesn't happen you have a 90% chance of it happening the second time you try it, what is the probability of Event A happening within two tries?
It's been a while since I took statistics and I'm not sure the right way to go about it. The only thing I can think of is 85% * 90% but I'm pretty sure that's not right.
It's been a while since I took statistics and I'm not sure the right way to go about it. The only thing I can think of is 85% * 90% but I'm pretty sure that's not right.