Questions from Statistics Principles


Q: A community college employs 87 full- time faculty members. To

A community college employs 87 full- time faculty members. To gain the faculty’s opinions about an upcoming building project, the college president wishes to obtain a simple random sample that will co...

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Q: The grade appeal process at a university requires that a jury be

The grade appeal process at a university requires that a jury be structured by selecting five individuals randomly from a pool of eight students and ten faculty. (a) What is the probability of selecti...

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Q: Suppose that there are 55 Democrats and 45 Republicans in the U

Suppose that there are 55 Democrats and 45 Republicans in the U.S. Senate. A committee of seven senators is to be formed by selecting members of the Senate randomly. (a) What is the probability that t...

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Q: Suppose that a shipment of 120 electronic components contains 4 defective components

Suppose that a shipment of 120 electronic components contains 4 defective components. To determine whether the shipment should be accepted, a quality- control engineer randomly selects 4 of the compon...

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Q: A box containing twelve 40-watt light bulbs and eighteen 60

A box containing twelve 40-watt light bulbs and eighteen 60-watt light bulbs is stored in your basement. Unfortunately, the box is stored in the dark and you need two 60-watt bulbs. What is the probab...

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Q: Suppose a Spotify playlist you just created has 13 tracks. After

Suppose a Spotify playlist you just created has 13 tracks. After listening to the playlist, you decide that you like 5 of the songs. The random feature on Spotify is set up to play each of the 13 song...

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Q: Through a manufacturing error, three cans marked “regular soda”

Through a manufacturing error, three cans marked “regular soda” were accidentally filled with diet soda and placed into a 12-pack. Suppose that three cans are randomly selected from the 12-pack. (a...

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Q: You are dealt 5 cards from a standard 52-card deck

You are dealt 5 cards from a standard 52-card deck. Determine the probability of being dealt three of a kind (such as three aces or three kings) by answering the following questions: (a) How many ways...

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Q: Follow the outline presented in Problem 67 to determine the probability of

Follow the outline presented in Problem 67 to determine the probability of being dealt exactly one pair.

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Q: Suppose that you have just received a shipment of 20 modems.

Suppose that you have just received a shipment of 20 modems. Although you don’t know this, 3 of the modems are defective. To determine whether you will accept the shipment, you randomly select 4 modem...

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