A bag of marbles contains 8 blue marbles, 7 red marbles, and 5 green marbles. Sampling without replacement, what is the probability you will get a. 3 blue marbles in three draws from the bag...

A bag of marbles contains 8 blue marbles, 7 red marbles, and 5 green marbles. Sampling without replacement, what is the probability you will get a. 3 blue marbles in three draws from the bag...

In a group of 200 students, 120 takes maths , 70 take history and 20 take both maths and history. Calculate the probability that a student chosen at random from the group take maths?

According to the Census Bureau, 20.3% of households are headed by someone age 65 or older. Of these households, the probability that the household income is less than $25,000 is .307. Of households...

An experiment consists of two independent trials. The outcomes of the first trial are A, B, and C, with probabilities of occurring equal to 0.2, 0.6, and 0.2, respectively. The outcomes of the second...

there are 50 students who were asked to choose printed books over digital ebooks or both or none. what is the probability of every choice getting two or more students?

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On average, the probability that James will correctly answer a question correctly on a science exam is 0.80. If an exam paper contains 10 questions and at least 9 correct answers is required to pass,...

A bag contains 4 green marbles and 3 red marbles. If three marbles are chosen at random without replacement, what is the probability of: a) all three marbles are red. b)...

Typing errors or “typos” occur at random on pages in books. The occurrence of these typos are independent of each other. We can safely assume that the occurrence of typos actually has a rather...

I need help!

1)Richie and Garth are electricians. Garth had been on 47% of their company's service calls. At least one of the two workers has been on 73% of their company's. Assume that Garth being on a service...

In a particular city 82 percent have a desktop computer 47 have a laptop computer and 34 have both a desktop and a laptop if a random selected home what is the probability it does not have a lapt...

A bag contains 4 White and 7 Black balls. Three balls are selected without replacement. A = 1 W 2B B = at least one black ball a. Find P(A) b. Find P(B) c. Are A and...

Spin the spinner and record the number that comes up (assume the spinner cannot stop on a dividing line). A = odd number B = number greater than 2 The Numbers in Spinner and...

For the following probability distributions: x 0 1 2 P(x) 0.5 0.4 0.1 a. Find E(x) b. Find σ(x)

For students who graduated from high school in 2013, their SAT math scores were approximately normally distribution with a mean 0f 514 points and a standard deviation of 118 points. if...

When playing American? roulette, the croupier? (attendant) spins a marble that lands in one of the 38 slots in a revolving turntable. The slots are numbered 1 to? 36, with two additional slots labeled...

I am in a 14 team fantasy league. One team has played the highest scoring opponent 4 out of 8 weeks (13 possible opponents each week). I know there are other factors to get an absolutely accurate...

a- How much would you pay for an item that had an original price of $85? b- Does the final discount on your jeans account for 45% sale on the original price?

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