0
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
True. Due to the symmetry of the normal distribution.
How many different 3 card hands from 52 card deck?
52*51*50
------------- = 22100 three-card hands
3!
How many 6 of hearts are in a deck of cards?
In one deck of 52 cards you will find just one six of hearts.
In a standard normal distribution about percent of the scores fall above a z score of 300?
A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.
How determine probablity for mutually exclusive events?
Mutually exclusive events are considered two events that cannot coexist with one another, in other words, if the first event is happening the second just cannot. Determining the probability for mutually exclusive events can be done by using the formula P ( A and B ) = 0.
What is the probability of drawing the ace of hearts first than the ace of diamonds?
The probability of drawing the Ace of Hearts from a standard deck of 52 cards is 1 in 52. The probability of then drawing the Ace of Diamonds is then 1 in 51. Multiply these two probabilities together, and you get 1 in 2652, or about 0.0003771.
The probability of drawing the ace of hearts from a deck before drawing the ace of diamonds, ignoring any other cards, is 1/2.
Note: Both of these answers are correct. It depends on your point of view. They've been left so that you, dear reader, can think about it.
What are some characteristics of probability?
It is a real number.
It cannot be negative.
The sum of the probabilities of all possible outcomes of a discrete variable is 1. Similarly, the integral of the probabilities over the whole range of possible outcomes of a continuous variable is 1.
Yes.
Yes.
Yes.
Yes.
While 1600m is closer to a true mile, there is no specific reason why internationally the 1500m is ran instead of the 1600m. The 1500m race started in the late 1800s in Europe, most likely as a metric version of the 1 mile race the Americans were running during that time. Once the metric system became the widely accepted measurement standard throughout most of the world the 1500m was officially adopted by International competition. With a record book spanning over 100 years for the 1500m race, it is unlikely the 1600m will become an official International race. The 1600m however, is most commonly ran in Highschool track.
What is a discrete investment?
A discrete investment is putting money towards something privately. It will eventually be beneficial in some way or it would not be an investment.
Difficult and expensive to prove lack of probable cause.
Probable cause can be anything from suspicious activity in the vehicle to weaving while driving or failure to signal.
I am sure you could find a lawyer who would try but I am also sure the judge would eventually find for probable cause in the end.
Discuss distribution function of mixed random variable?
In some situationsX is continuous but Y is discrete. For example, in a logistic regression, one may wish to predict the probability of a binary outcome Y conditional on the value of a continuously-distributed X. In this case, (X, Y) has neither a probability density function nor a probability mass function in the sense of the terms given above. On the other hand, a "mixed joint density" can be defined in either of two ways:
Formally, fX,Y(x, y) is the probability density function of (X, Y) with respect to the product measure on the respective supports of X and Y. Either of these two decompositions can then be used to recover the joint cumulative distribution function:
The definition generalizes to a mixture of arbitrary numbers of discrete and continuous random variables.
If the fetus is 9cm long is it more likely to have been conceived 10 or 14 weeks ago?
About 14-15 weeks into pregnancy the fetus is about 9cm long so it was conceived 12-13 weeks ago.
The probability is 0.5
How do you shine a marble tabletop?
1/3 liquid softener w/ 2/3 water - Clean and polish with a soft cloth. This is another tip from a book I reference frequently, Talking Dirty with the Queen of Clean by Linda Cobb. She includes additional tips for maintaining marble such as cleaning difficult spots, buffing scratches, and removing stains caused by grease, rust, tea, coffee, ink, etc.
What does 001 probability mean?
An event with a probability of 001 = 1 is a certainty. The event must happen.
Standard deviation in statistics refers to how much deviation there is from the average or mean value. Sample deviation refers to the data that was collected from a smaller pool than the population.
