From a bag of numbers 1-25, one number is extracted. The probability of drawing a number divisible by 5 is ?

From a bag of numbers 1-25, one number is extracted. The probability of drawing a number divisible by 5 is ?

A person is presented with ten choices, five of which are correct, and five that are wrong. They have to select exactly five of the choices. If the person is completely guessing,...

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My question is p(A’ ∩ B') = p(AUB) p(A ∩ B) = p(A’UB’) It is equals the same answe or not ?

Mean of 75 and a standard devation of 7. For a question I need to know how many out of 800 get a test score of 96 or more. So, in my calculatior (casio fx-9750GII) I...

A bus has 15 seats. 15 passengers had bought tickets for that bus with assigned seats. But each of them chose a seat randomly. Find the probabilities of the following events: a)at least...

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Probability sheet

There are 15 cherries in one plate, 10 of which have removed the seeds. A greedy pig eats 3 cherries at random, without noticing whether they have or do not have seeds. Then one of the remaining cherries...

Assume there is a button that has a 1 in 1000 chance to kill you if you press it that everyone is forced to press. I know that the odds of it happening twice in a row is 1,000,000. What I want to...

In one experiment we throw three dice.Determine the probability that at least on two of them we will get even numbers.

Two numbers are chosen at random from the interval (-1,1). If we know their sum is negative, find the probability that the first number is less than 1/2 and its square is less than the second number...

A student council has five seniors, four juniors, three sophomores, and two freshmen as members. In how many ways can a four member council committee be formed that includes one member of each class...

The cumulative distribution of the random variable X is given by G(x) = 0 for x<0 ...

A test has two parts, A and B, each containing 10 questions. A student needs to choose 8 questions from part A and 4 questions from part B. In how many ways can he do that?

A committee of six is to be selected from a group of six girls and six boy. In how many ways can this committee been elected so that half of its members are boys and half our girls?

The shaded region is 5 ft by 3ft. The rug is 6 ft by 10 ft. Altogether its 75 ft (The whole rug). Express the answer as a decimal.

A house has a large window made of 15 equal pieces of glass, each the same size and shape. There are 3 pieces of glass that are cracked. If a rock thrown by a lawn mower hits the window, what is the...

How many licence plates of three symbols (letters and digits) can be made using at least one letter in each?

A lamp uses one bulb with an average lifespan of 1100 hours. We bought two bulbs, so once the first bulb burns out, we replace it with a second of the same type. Assuming we can model the probability...

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