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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 that 16 rolls of a fair die will show 4 ones?

evens says 4 * 6 = 24 rolls required for 4 shows

so 4 shows in 16 = 16 : 24 = 5 to 8 against

What are the possible outcomes when you roll a number cube?

1,2,3,4,5,6 are the possible outcomes. There's a 1/6 chance for each.

What is a Z Score?

A z-score is a means to compare rank from 2 different sets of data by converting the individual scores into a standard z-score. The formula to convert a value, X, to a z-score compute the following: find the difference of X and the mean of the date, then divide the result by the standard deviation of the data.

What is the x deck card in uno attack?

It's called a "Discard all" card.

- When played, you must discard all cards of the color of the discard all card

(E.g: If the top card on the discard pile is a blue 4, the player may play a blue discard all card and discard all their blue cards.)

Can you end on ace in last card?

yes you can but you can not end with a 2,5 or 8 ..

What probability cannot happen?

By definition, the probability of an event is always some number between 0 and 1. Sometimes we think of these as percents. For example, if something has a probability of 25%, the probability is simply 25/100, or .25.

By this definition, nothing can have probability 3 or 1.2, or any negative number whatsoever. Only probabilities between 0 and 1 (inclusive) are allowed.

What is the probablity that the sequence will be heads-heads-heads-heads if you toss a coin 4 times?

Each independent trial has a 1/2 probability that a heads will result. So for a sequence of 4 heads you have 1/2 x 1/2 x 1/2 x 1/2 = 1/16

What is the important law of binomial distribution?

1 - 2 answers

2 - probabilty of success remains constant

3 - outcomes of trials are independent

4 - random variable of interest is the number of successes in a fixed number of of trials

What is 3.5 billion as a percentage?

Your question is actually meaningless without context. But allow me to propose one. Let us say that the question is, 3.5 billion is what percentage of the current total human population of nearly 7 billion people. The answer then is nearly 50%.

How are experimental probability and theoretical probability related?

As the number of times that the experiment is conducted increases, the experimental probability will near the theoretical probability - unless there is a problem with the theoretical model.

When rolling a sixsided die a possible event is rolling a sum which is a multiple of 5 What is the probability of this event?

The probability of rolling a multiple of five on a standard die is 1 in 6, or about 0.1667.

The probability of rolling a 10, 15, or higher is zero, because the question implied only one die.

How do you make a cumulative frequency table?

Given a frequency table,

  • the first cumulative frequency is the same as the first frequency;
  • the second cumulative frequency is the sum of the first cumulative frequency and the second [ordinary] frequency;
  • the third cumulative frequency is the sum of the second cumulative frequency and the third [ordinary] frequency;
  • and so on.

An alternative definition is that the cumulative frequency for any value is the sum of all the frequencies less than or equal to that value.

How likely is it to have two miscarriage in a roll?

it is very possible to have two or more misscariages one after the other, i had a misscariage in June at 9 weeks pregnant and am now 7 weeks pregnant and the same thing is happening again, it is now November! hope that has helped good luck xx

What will be the probability of 4 sons to a couple?

Since the probability of having a son is about 1/2, the probability of the first 4 children being boys is about (1/2)4.

Is it possible to have an event that causes more than one hazardous process to occur?

It is possible to have an event that causes more than one hazardous process to occur. An example is the landslide in Myanmar. Because of the heavy rains, a flood and landslide can both occur. Another example can be seen in the game Sim City. If there is an earthquake in the town, the earthquake can cause fires by the power lines.

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