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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

How is probability determined from a continuous distribution?

In a continuous distribution, probability is determined using the concept of areas under the curve of the probability density function (PDF). Since the probability of a specific outcome is technically zero in a continuous distribution, probabilities are calculated for intervals (ranges) of values. This is done by integrating the PDF over the desired interval, yielding the area under the curve for that range, which represents the probability of falling within that interval.

What class were the counil of leader picked from?

The Council of Leaders, often seen in various historical and fictional contexts, is typically composed of individuals from the ruling or elite class, such as nobility, high-ranking officials, or influential community members. In some cases, they may also include representatives from key sectors like military, commerce, or religion. This selection aims to ensure that the council has diverse perspectives while maintaining a connection to the socio-political power structure. The exact class from which members are chosen can vary significantly depending on the specific context or narrative.

What event happen on May 5 2002 in space?

On May 5, 2002, the European Space Agency (ESA) successfully launched the Mars Express spacecraft from the Baikonur Cosmodrome in Kazakhstan. This mission marked ESA's first mission to Mars and aimed to study the planet's atmosphere, surface, and geology. Mars Express later deployed the Beagle 2 lander, which aimed to search for signs of life on Mars, although it ultimately failed to communicate after landing.

If the spinner is spent 12 times and then lands on blue once then compare the experimental and theoretical probability then explain if they're not close?

The theoretical probability of landing on blue would depend on the total sections of the spinner designated for blue out of the total sections. If the spinner is divided equally and has, for example, 4 sections (one of which is blue), then the theoretical probability of landing on blue is 1/4 or 25%. However, if it lands on blue only once in 12 spins, the experimental probability would be 1/12 or about 8.33%. Since these probabilities are not close, it suggests that the outcomes of the spins may not align with the expected theoretical distribution, possibly due to chance or an imbalance in the spinner's design.

What is the probability of rolling a sum of 8 with one die?

It is not possible to roll a sum of 8 with just one die, as the maximum value on a standard six-sided die is 6. Therefore, the probability of rolling a sum of 8 with one die is 0.

What is the word for someone who was at an event and saw it happen?

The word for someone who was at an event and witnessed it happen is "witness." A witness can provide firsthand accounts of what transpired, often playing a crucial role in legal proceedings or investigations.

How many face cards in a suit?

In a standard deck of playing cards, each suit contains three face cards: the King, Queen, and Jack. Therefore, there are a total of 12 face cards in the entire deck, as there are four suits (hearts, diamonds, clubs, and spades).

What is the number that describes the likelihood that an event will occur as a prediction?

The number that describes the likelihood of an event occurring as a prediction is called probability. It is typically expressed as a value between 0 and 1, where 0 indicates that the event will not occur, and 1 indicates certainty that the event will occur. Probabilities can also be represented as percentages, ranging from 0% to 100%. In statistical terms, probability quantifies uncertainty and helps in making informed predictions.

The likelihood that a event will happen?

The likelihood that an event will happen is often expressed as a probability, indicating how likely it is for that event to occur relative to all possible outcomes. Probability values range from 0 (impossible event) to 1 (certain event). Factors influencing likelihood include historical data, statistical analysis, and specific conditions surrounding the event. Understanding likelihood helps in decision-making and risk assessment across various fields.

A game board has 8 cards and 2 say WIN. Mayela picks 2 cards without replacing the first. What is the probability that neither say WIN?

To find the probability that neither of the two cards Mayela picks says WIN, we first note that there are 8 cards in total, with 2 WIN cards and 6 non-WIN cards. The probability that the first card she picks is not a WIN card is 6/8 (or 3/4). After picking one non-WIN card, there are 7 cards left, with 5 of those being non-WIN cards. The probability that the second card is also not a WIN card is 5/7. Thus, the overall probability that neither card says WIN is (6/8) * (5/7) = 30/56, which simplifies to 15/28.

) Which term most closely matches the description An expression of the risk associated with a hazard that combines its severity and probability into a single Arabic numeral which can be used to help d?

The term that most closely matches this description is "risk index." A risk index quantifies the risk associated with a hazard by combining its severity and the probability of occurrence into a single numerical value. This numerical representation aids in decision-making and prioritization of risk management efforts.

What is the probability of getting two heads when you flip a coin three times?

To find the probability of getting exactly two heads when flipping a coin three times, we first determine the total number of outcomes, which is (2^3 = 8). The favorable outcomes for getting exactly two heads are HHT, HTH, and THH, totaling 3 outcomes. Therefore, the probability is the number of favorable outcomes divided by the total outcomes: ( \frac{3}{8} ).

If number one through six are written on individual cards and placed in a bag if you reach into the bag and grab one card what is the probability that it will be a number greater than 6?

Since the cards are numbered one through six, there are no cards with a number greater than six in the bag. Therefore, the probability of drawing a card with a number greater than six is 0.

What year proved that machines capable of processing a stream of 1s and 0s was capable of solving an probability?

The year 1956 is significant, as it marked the Dartmouth Conference, where the foundations of artificial intelligence were laid. Researchers demonstrated that machines could process binary data (1s and 0s) to solve complex problems, including those involving probabilities. This event is often considered a pivotal moment in the development of AI and computational theory.

In a 5 hand game of cards what are the odds for being dealt each what hands 1 Big Bobtail 2 Skip Straight 3 Little Bobtail 4 Blaze 5 Russ 6 Bobtail Flush 7 Flush House 8 Bobtail Straight?

Calculating the odds for specific hands in a 5-card game depends on the definitions of each hand, which can vary by game variant. Generally, the odds of being dealt any specific hand can be derived from the total combinations of 5 cards from a standard 52-card deck, which is 2,598,960. For precise probabilities, you would need to define each hand clearly and apply combinatorial calculations based on those definitions. If you provide the exact criteria for each hand, I can help calculate the odds more accurately.

How many ways can ten cards be chosen from a deck of cards?

To determine how many ways ten cards can be chosen from a standard deck of 52 cards, we use the combination formula ( C(n, k) = \frac{n!}{k!(n-k)!} ), where ( n ) is the total number of cards, and ( k ) is the number of cards to choose. For this scenario, it would be ( C(52, 10) = \frac{52!}{10!(52-10)!} ). This calculation gives us the total number of combinations of ten cards from the deck, which equals 102,722,781.

When one marble hit the end of the line of marbles how many shot off the other end?

When one marble hits the end of a line of marbles, typically only one marble will shoot off the other end, assuming the marbles are tightly packed and the collision is elastic. This is due to the conservation of momentum and energy in a perfectly elastic collision. However, if the marbles are not perfectly aligned or if there are variations in their masses, it's possible for more than one marble to move, but the most common scenario is that one marble is propelled forward.

How do I get sand out of my fidget spinner?

To remove sand from your fidget spinner, first, disassemble it carefully if possible. Use a soft brush or compressed air to gently dislodge sand particles from the bearings and crevices. If the sand is stubborn, you can clean the bearings with isopropyl alcohol. After cleaning, allow the spinner to dry completely before reassembling it.

What is the record for consecutive head toss coin?

As of my last update, the record for the most consecutive heads in a coin toss is not officially documented, as coin toss outcomes are generally considered random. However, anecdotal reports suggest that sequences of up to 20 consecutive heads have been achieved in informal settings. For any updated or specific records, it's best to consult relevant sports or Guinness World Records sources.

What is probability of getting a black purebred offspring from the cross?

To determine the probability of getting a black purebred offspring from a cross, we need to consider the genetic inheritance patterns of the parents. If both parents are black purebreds, the probability of producing a black purebred offspring is 100%. However, if one or both parents are not purebred or carry different alleles for coat color, the probability will vary based on the specific genetics involved. Therefore, more detailed information about the parents' genotypes is required for an accurate calculation.

What is the probaility of flipping a heads and rolling a 4 with fair number cube?

To find the probability of flipping a heads and rolling a 4, we multiply the probabilities of each independent event. The probability of flipping heads is ( \frac{1}{2} ), and the probability of rolling a 4 on a fair six-sided die is ( \frac{1}{6} ). Thus, the combined probability is ( \frac{1}{2} \times \frac{1}{6} = \frac{1}{12} ). Therefore, the probability of both events occurring is ( \frac{1}{12} ).

What is the probability or rolling a dice and landing on 4?

The probability of rolling a standard six-sided die and landing on a specific number, such as 4, is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. Since there is only one side with a 4 and six sides in total, the probability is 1/6. Thus, there is a 16.67% chance of rolling a 4.

A colorblind man and woman with normal vision whose father was colorblind have a son what is the probability that their son is colorblind?

Make a punnet square with the mother above, her genotype would be: X^B X^b, and the father to the left whose genotype is X^b Y.
The probability of having a colorblind CHILD is 50%. The probability of them having a SON is 50%. Since we are asked what the probability of their SON being colorblind, it is 50% as well. The reason is because the chance of having a colorblind son, among sons only, (according to the punnet square) is 50%.

How many 5 in a standard deck of cards?

In a standard deck of cards, there are four 5s, one for each suit: hearts, diamonds, clubs, and spades.

What is Mutually Exclusive probability?

Mutually exclusive probabilities refer to scenarios in probability theory where two events cannot occur simultaneously. If one event occurs, the other cannot; for example, when flipping a coin, landing on heads and tails are mutually exclusive outcomes. The probability of either event occurring is the sum of their individual probabilities, as they cannot happen at the same time. In mathematical terms, if A and B are mutually exclusive events, then P(A ∩ B) = 0.

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