Probability

There are 7893600 permutations.

there is only 1 way that you should ask your school principle

It is 1/9.

The probability of rolling a 3 or 4 with a 6 sided die is 2 over 6. Also known as one/third.

2/6 or 1/3 or 0.3333.

Area to the left of z = -1.72 = area to the right of z = 1.72

That is ALL the "working" that you will be able to show - unless you are into some serious high level mathematics. Most school teachers and many university lecturers will not be able to integrate the standard normal distribution: they will look it up in tables. (I have an MSc in Mathematical Statistics and I could do it but not without difficulty).

Pr(z < -1.72) = 0.042716

A representative sample is a randomly selected subset of the population.

The probability of getting tails in any one flip is 1/2, so 1/2 x 1/2 x 1/2 x 1/2 = 1/16, or 6.25%

Since 49 is a composite, the answer is 0.

by keeping in touch with your family and friends and helping others

Assuming it is a standard poker deck with 52 cards and 4 aces

The probability of getting your first card an ace is = 4/52

Over here you need to reread your questions. There are something you need to know before i continue - when you draw your second card, did you return the first card back into the pile? lets say if you draw an ace of spades, would you be able to redraw it again for the second card?

If the first ace is return to the pile:

probability of getting a second ace is also 4/52

so the total probability of getting both cards an ace is (4/52 x 4/52)

If the first ace is not return to the pile:

probability of getting a second ace is now 3/51

note that removing one ace also removes one card from the pile. total card is now 51 with 3 aces only

so the total probability of getting both cards an ace is (4/52 x 3/51)

hope i help.

1/33000

You may need to make a continuity correction - see statistical text books for details.

Half the discrete unit.

If you toss a coin often enough, it is a certainty, so that the probability = 1.

The probability of that outcome in the first five tosses of a coin is (1/2)5 = 1/32.

If I have understood the question correctly, the answer is 1/2.

The risk.

0.088508

The answer depends on the probability that Alex makes a single shot.

The answer depends on how many cards are drawn and whether they are drawn at random.

The probability that a single card, drawn at random from a deck of cards in 16/52 = 4/13.

Your question cannot be answered as stated. Please explain further.

Sometimes a population consists of a number of subsets (strata) such that members within any particular strata are alike while difference between strata are more than simply random variations. In such a case, the population can be split up into strata. Then a stratified random sample consists of simple random samples, with the same sampling proportion, taken within each stratum.

bigger

If the choice is unbiased, the change is 14/(10+14).

If the chooser prefers choosing boys, the probability is 0.