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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 would you solve probability of all cards being the same suit if 12 are chosen from a deck of 32?

I need more information. I would guess a deck of 32 cards would only have 8 card in each suit, so it would be impossible to draw 12 cards of the same suit.

--- actuary fl

What is an ileoanla anastomosis?

An ileoanal anastomosis is a procedure in which the surgeon forms a pouch out of tissue from the ileum and connects it directly to the anal canal.

What is the probability of rolling a ten with dice?

There are 36 permutations of rolling two dice. Three of them, (4,6), (5,5), and (6,4) add up to ten. Therefore, the probability of rolling ten on two dice is 3 in 36, or 1 in 12, or about 0.0833.

What is the probability of drawing either a jack or queen?

If you use a normal card set, it would be 8/53 chance, because it it 4 queens an 4 Jacks (8 in total) and 52 cards to pick between. If you reduce it, the probability would be 2/13.

Why is it important that the scientific community use a standard set of units in measuring and recording data?

One of the fundamental requirements of any scientific theory is that experiments are replicable. This requires reuslts to be comparable which would be impossible if members of the community did not use the same units.

Difference between variables and probability distribution?

Assuming you mean random variable here.

A random variable is term that can take have different values. for example a random variable x that represent the out come of rolling a dice, that is x can equal 1,2,3,4,5,or 6.

Think of probability distribution as the mapping of likelihood of the out comes from an experiment. In the dice case, the probability distribution will tell you that there 1/6 the time you will get 1, 2,3....,or 6. this is called uniform distribution since all the out comes have that same probability of occurring.

When a fair coin is tossed 20 times in a row what is the probability that heads comes up 10 times in a row somewhere in the 20 tosses?

The probability of 10 heads in a row is (0.5)10 = 0.000977 = 0.0977% .

It makes no difference what has come before or what comes after.

Is a stratified sample a probabilty sample?

Within each stratum it is, but overall, it is not.

What is the probability of 6 green marbles?

We can't answer that without knowing what else is in the bowl.

What is the probablity of rolling a number greater than 2 on one roll of a die?

Let say the dice has n sides

Let first search for the probability to roll a number less or equal to 2

Probability to roll a 1 = 1/n

Probability to roll a 2 = 1/n

Probability to roll a 1 OR a 2 = Probability to roll a 1 + Probability to roll a 2

= 1/n + 1/n = 2/n

Probability to roll a number greater than 2 = 1 - (Probability to roll a 1 OR a 2)

= 1 - 2/n = (n-2)/n

If n = 6 then the result is (6-2)/6 = 4/6 = 2/3

How many possible outcomes are there of tossing a coin 30times?

That's the same as the highest binary number you can write with 30 bits.

It's 230 = 1,073,741,824 .

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Can T H C be distilled?

I've never heard of it but i have thought about it before. i mean it can be vaporized so im sure it can be condensed. the confusing part is that it is a solid. i came up with a design and that would be to hook up a THC vaporizer to a bottle filled with everclear. put the hose from the vaporizer in the bottle, so the vaporized THC would bubble up through it. you would have to make sure the alcohol is cold enough to condense it quickly. then evaporate the alcohol and you would have somewhat pure THC (i believe its a white powder when its pure.) using this method you can eliminate the other substances that are alcohol soluble but don't vaporize.

What are the chances of getting hit by a tree?

Zero, or, actually, so close to zero that for all practical purposes you can consider it to be zero.

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