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Probability
The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.
14,643 Questions
Why wont a sample statistics change from sample to sample?
The sample mean may differ from the population mean, especially for small samples.
How many hands of 13 cards containing all 4 aces can be dealt from a 52 cards?
The question is the same as:
"After removing the 4 aces from a standard deck, how many different hands
of 9 cards can be dealt from the remaining 48 ?"
The calculation is
48! / (39! x 9!) = (48 x 47 x 46 x 45 x 44 x 43 x 42 x 41 x 40) / (9 x 8 x 7 x 6 x 5 x 4 x 3 x 2)
We get 1,677,106,640 .
it means you stink! Whatever? It is the practice of skincare, i.e. waxing, facials, etc.
Rolling three dice what is the probablity of obtaining different outcomes?
Depends if the dice is bias then you an not have an answer if it is fair then you times 6 by 3 which = 18 so if you want three different outcomes then 3/18 which is simplified to 1/6 of a chance!
The binomial distribution which, for large numbers of rolls can be approximated by the Gaussian distribution.
It is a measure of how much individual values spread around the average.
Is tossing 1 coin 100 times the same as tossing 100 coins 1 time?
Depends on if you are talking about probability. If so then yes. If not then 100 coins is more than 1 coin.
What is the probability of throwing a sum of 8 with 2 dice in nine throws?
The first thing to do is isolate how many ways there are to get 8 from two dice. These possibilities are:
2,6
3,5
4,4
5,3
6,2
so there are 5 possibilities. The probability of each of these combinations is (1/6)2 or 1/36, so the probability of getting 8 in one throw of 2 dice is 5/36
For 9 throws, it is easier to calculate the probability of never getting 8. This is (1-probability of getting 8)9. (1-5/36)9 = (31/36)9 which is 0.26033. So the probability of getting an 8 somewhere along the line is 1-0.26033 or 0.7397
How many different four-letter secret codes can be formed if the first letter must be an S or a T?
If the first two letters must be an S or a T, then there are three remaining places that can be one of 26 letters. This is equal to 26 * 26 * 26 * 2, or 35,152 possible combinations.
What is the odds for rolling a 5 or an even number when a die is rolled?
2/3 or 66.6666666667%
-Nicci
4 out of 6 chances
-Snoady
What country does green marble come from?
The quary closed some thirty years ago. It was in Delta, Pennsylvania, USA.
product
If you shoot 5 free throws what are the possible outcomes?
The only possible outcomes are 1, 2, 3, 4, 5, or 0 points.
What is the frequency for heads in a series of 100 tosses of a fair coin?
The theoretical frequency of heads will be .5 and as you do more and more coin tosses the observed frequency should get closer and closer to .5. With 100 tosses, it will be pretty close, but not exactly .5
What is the difference between an event sample and a time sample?
An event sample is data points captured for a single event. A time sample are data points capture over a specific period of time.
