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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
Toilet rolls are sold in packs of 4 How many toilet rolls are there in 6 packs?
6 X 4 = 24 toilet rolls in 6 packs.
There can be only one permutation of a single number: so the answer is 7.
What are the chances of for the probability 2 to 5?
The chances of picking a number between 2 to 5 is 4/10 if the numbers to be picked from are 1-10. However, if the numbers to be picked from are 1-100, then the probability drops to 4/100.
How many marbles did each get?
If each of three people was supposed to have the same amount of marbles, and there were nine total marbles, it is a division problem:
9/3=3 marbles each. You really need to offer more information.
When to you use a z-scores or t-scores?
T score is usually used when the sample size is below 30 and/or when the population standard deviation is unknown.
Can the probability of an outcome be greater that one?
No. The probability of an outcome (or event) is always a number between 0 and 1.
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How many ways can the letters about be arranged?
The letters A B O U T can be arranged 120 different ways. This is the number of permutations of 5 things taken 5 at a time, or 5 factorial.
How to decide the fairness and unfairness of a dice?
Throw is a very large number of times. If the six numbers come up approximately 1/6 number of times then it is likely that the die (not dice!) is fair. If one or more numbers comes up more often than the die is not fair. You can never be certain.
What does it mean when you pick the ace of diamonds out of a card deck?
Diamonds denote career, money and travel.
Ace of Diamonds A sparkling engagement.
You will be laying long-term foundations, building on them and enjoying the pleasant way your life develops.
Your lover may pop the question. If you are unattached, you will fall in love with someone you will meet within a week, a month, or in January.
Alternately, you may receive a wonderful business offer or letter.
What to do when somebody dies?
When someone dies there are many decisions and arrangements to make, all of which can be difficult in a time of grief. To help, we've put together this checklist to guide you through the process.
You could probably find it at your nearest Walgreens or maybe Walmart. If dice isn't there, then you could find it probably at Learning Express or a teacher store. Hope this helps!
If A couple has five sons what is the chance that their next baby will be a daughter?
There is no simple answer to the question because children's gender are not independent events: they depend on the parents' ages and their genes. However, if you assume that the events then, the probability of a daughter is approx 0.48
Odds of getting a king in a five card poker hand?
There are 4 kings in a deck of 52 cards, so the probability of any one card being a king is 4/52 = 1/13.
The probability of getting at least one king is 1 - (12/13)5, in other words 1 minus the probability of not getting a king 5 times. This comes to 0.3298, or approximately 1 in 3.
If you want the probability of getting exactly 1 king, then the calculation is 5*(1/13)*(12/13)4 = 0.2792, or roughly 7/25.
What is the probability that a family will have a boy?
The probability is1 - [Prob(No children) + Prob(1 child, a girl) + Prob(2 children, both girls) + Prob(3 children, all girls) + ...]
Not all relevant information is readily available.
