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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
A playing card is dropped 3 times What is the probability of it landing face up all three times?
1/2 * 1/2 * 1/2 or 1/8
Why are there fifty-two cards in a pack?
If your question refers to the structure of the cards, there are four suits, each with 13 cards:
A,2,3,4,5,6,7,8,9,10,J,Q,K
If your question refers to why these cards were selected, the popular answer is that there are four suits for the four seasons and thirteen cards in each because there are thirteen weeks in a season. As you can see, the 52 cards correspond with the fact that a year has 52 weeks.
What is the probality of picking 23 of hearts in a deck of cards?
The probability of picking a 23 of hearts in a standard 52 card deck of cards is zero, because there is no 23 of hearts.
If you meant to ask about the probability of picking a 2 or a 3 of hearts, then the probability is 2 in 52, or 1 in 26, or about 0.03846.
120
No, a probability must needs be a number between 0 and 1.20% might be a probability, though - since that is equivalent to 0.2.
What does population size means?
Statistics often requires one to make estimates of some measure (variable) about a set of units. The total number of such units is the population size.
Note that population, in this context, need not refer to people. If the study is about household expenditure on food (in some area), then the population is all households and the population size is the number of households (in that area). If the study is about diversity of insects in a field, the population may be all 1-metre squares in the field, and the size of the population will be the number of such plots - which will equal the area of the field.
Is it true that normal distribution is characterised by Standard deviation only?
No. You must have the mean ("average") as well.
What are the chances of picking a red king from a deck of cards with the jokers removed?
The probability is 2/52 = 1/26
you cannot predict how many times you get heads or tails but however you can predict the probability it will hit heads or tails only which is don by multiplying 1/2 by itself 5 times
How many different arrangements are there of the letters in Harrell?
There are 7!/(2!*2!) = 1260 arrangements.
i got 1000000000000000000000000k0000000000000000000k000000000000 robux in roblox i am so rich than you l
The amount that something is bound to happen. The probability of rain tonight is good means, it will probably rain. The probability of the bookstore running out of books, is slim to none. It shouldn't.
