In summer 2015, as happens most summers in the UK, a question from the GCSE Mathematics paper (for 16-year-olds) made it into the press for being “impossible”. 299 more words
Tags » Probability
A man speaks the truth 3 out of 4 times. He throws a die and reports it to be a 6. What is the probability of it being a 6?
The law expresses the total probability of an outcome which can be realized via several distinct events. It says that if is a finite or countably infinite partition of a sample space (in other words, a set of pairwise disjoint events whose union is the entire sample space) then for any event… 7 more words
If a coin is tossed twice, is the event of two heads is more likely if we know that the first toss is a head, or if we know that at least one of the tosses is a head.
Suppose you're given the choice of three doors: Behind one door is a prize; behind the others, nothing. You pick a door, and the host, who knows what's behind the doors, opens another door, which has nothing behind it. Is it to your advantage to switch your choice?
There are 1000 coins in a bag. One of them has heads on both sides. You pick a coin and, without looking at it, flip it ten times. And every time you get a head. What is the probability that this is the bad coin.
- The random variable
- Check whether the variable discrete or continuous
- The probability (Mass/Density) Function
- The cumulative distribution function
- The expectation
- The variance
- The standard deviation… 15 more words