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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
What is the probability of drawing 2 similar cards from a deck of 5?
The answer depends on how many of the 5 cards are similar.
What is the probability of rolling a 4 or a 12 on the first roll of a pair of dice?
The probability of rolling a 4 is 3/36 .
The propbability of rolling 12 is 1/36 .
The probability of rolling either one is 4/36 = 1/9 = 111/9 percent.
A matched test is appropriate only if the two variables are measures taken for the same subject.
What does it indicate if the mean is greater than the standard deviation?
It does not indicate anything if the mean is greater than the standard deviation.
This is going to be big. To simplify the idea some, start with the digit, and write Even & Odd. The even side will look exactly like the odd side. Then for the first letter, list all 26 letters. Then under each letter, list all 26 letters again. So under ODD you will have 676 letters. And the same under Even, for 1352. Looking at the odd side, you have the first tier P has 26 under it, and Q has 26 under it for 52. Then for the other 24 letters, each one has 2 'winners', so 48 more. So there are 100 winners out of 1352 total.
What is the class boundary of a class ranging from 115 to 215?
Without further information, all that can be said is that the boundaries are 115 and 215.
Without further information, all that can be said is that the boundaries are 115 and 215.
Without further information, all that can be said is that the boundaries are 115 and 215.
Without further information, all that can be said is that the boundaries are 115 and 215.
Question . If two normal dice are thrown together, what is the probability of getting a sum of 6?
5 of 36. That's about 14% if you round up.
Are there nighttime events in Hanukkah?
The main "event" of Hanukkah is the evening candle lighting. (Every night of the 8 nights of Hanukkah the menorah is lit with one more candle; thus on the first evening 1 candle is lit, on the 8th evening 8 candles are lit.)
Candle lighting is done preferably at dusk or as the starts come out. Latecomers can light as long as they have an audience - until dawn.
After candle lighting it is customary to sing songs (like Ma'oz Tzur) and play with a dreidel; a 4 sided Hanukkah-top.
A fair coin has been tossed 100 times resulting in 75 heads and 25 tails The next toss has?
each toss is independent of the previous one(s), so both outcomes are equiprobable.
When there are two or more events that are independent then counting is usually simpler.
What is the prabobility of rolling a die once and getting a eaqual number?
None, since there is nothing for the number to be equal to (or eaqual, even).
What is the probability that your friend will pick a 15 or a 16 from 1 to 20?
The probability of picking a 15 or a 16 from the random set [1-20] is 2 in 20, or 1 in 10, or 0.1.
What is the probability of rolling and even number on an ordinary dice?
your set of even number x = {2,4,6}, which tells you that 3 out the 6 sides are even. Your probability is 3/6 = 1/2
4/7 * 4/7 or 16/49.
What are the 4 r's to prevent head-on collison?
How about r for reverse. If you are always moving in reverse you can never have a head on collision. Simple!
What is the probability of rolling a three or a six on a die then tossing a heads on a coin?
First event is to roll a 3 or 6 on a die, which gives you a probability of 2 out of 6.
Second event is tossing a heads on a coin, so a probability of 1 out of 2.
Since both chances are not related, you can multiply both chances:
2/6 times 1/2 = 1/6 = 0,166666...
What is the probalility if heads up two times and tails up one time?
If it's a fair coin, the probability is 0.5 * 0.5 * 0.5 = 12.5%.
