Questions from Statistics


Q: The 50 songs on a smart phone consist of 15 that are

The 50 songs on a smart phone consist of 15 that are rock, 20 that are jazz, and 15 that are country. Selections are played randomly and can be repeated. What is the probability of each of the followi...

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Q: If r = 0.200, then r2 = 0.

If r = 0.200, then r2 = 0.040 and 4% of the plotted points lie on the best-fit line.

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Q: A pollster plans to call adults. She has a list of

A pollster plans to call adults. She has a list of names and numbers of 100 adults, consisting of 60 males and 40 females. She will make random selections and will not call the same person more than o...

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Q: What is the probability that a randomly selected defendant either pled guilty

What is the probability that a randomly selected defendant either pled guilty or was sent to prison? Source: Brereton and Casper, “Does It Pay to Plead Guilty? Differential Sentencin...

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Q: What is the probability that a randomly selected defendant either pled not

What is the probability that a randomly selected defendant either pled not guilty or was not sent to prison? Source: Brereton and Casper, “Does It Pay to Plead Guilty? Differential S...

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Q: If two different defendants are randomly selected, what is the probability

If two different defendants are randomly selected, what is the probability that they both entered guilty pleas? Source: Brereton and Casper, “Does It Pay to Plead Guilty? Differentia...

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Q: If two different defendants are randomly selected, what is the probability

If two different defendants are randomly selected, what is the probability that they both were sentenced to prison? Source: Brereton and Casper, “Does It Pay to Plead Guilty? Differe...

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Q: If a defendant is randomly selected, what is the probability that

If a defendant is randomly selected, what is the probability that the defendant entered a guilty plea and was sent to prison? Source: Brereton and Casper, “Does It Pay to Plead Guilt...

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Q: If a defendant is randomly selected, what is the probability that

If a defendant is randomly selected, what is the probability that the defendant entered a guilty plea and was not sent to prison? Source: Brereton and Casper, “Does It Pay to Plead...

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Q: If one of the pedestrian deaths is randomly selected, find the

If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was intoxicated or the driver was intoxicated.

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