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An urn contains 6 black

/in /by

Question

An urn contains 6 black

and 5

 green balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all 4

 balls drawn from the urn are green? Round your answer to three decimal places.

 
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An urn contains 5 white

/in /by

Question

An urn contains 5 white

and 9

 green balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all 4

 balls drawn from the urn are white? Round your answer to three decimal places.

 
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What is the probability that two sedans will be selected?

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Question

An automobile manufacturing plant produced 31 style=”color:rgb(0,0,0);”> vehicles today: 11 were sedans, 9 were vans, and 11 were trucks. Plant managers are going to choose two of these vehicles for thorough inspection. The first vehicle will be chosen at random, and then the second vehicle will be chosen at random from the remaining vehicles. What is the probability that two sedans will be selected?Report your answer as an exact fraction

 
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what is the probability that he gets more than 2 of them correct?

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Question

A multiple-choice test consists of 8 style=”color:rgb(0,0,0);”> questions. Each question has answer choices of a, b, c, d, and e, and only one of the choices is correct. If a student randomly guesses on each question, what is the probability that he gets more than 2 of them correct?

Question

 
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