A class of 15 students is working on an in-class assignment. The students are split up into 5 groups of 3, and asked to solve a probability problem. Each student (independently) has a chance of knowing how to do the problem; however, if anyone in a group knows how to do the problem, everyone in the group gets it right. What is the expected number of students that get the problem right?

Q: From experience, an airline knows that only 85% of the passengers booked for a certain flight…

A: Given Information :  From experience, an airline knows that only 85% of the passengers booked for a…

Q: At a local college, 76 of the male students are smokers and 114 are non-smokers. Of the female…

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Q: A box has 34 orange hats and 13 yellow hats. If you pick 3 hats without replacemen

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A: Given : A zoo has a collection of 400 flamingos. 180 of these flamingos are red.

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A: According to the provided data,

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A: From the provided information, There are 3 classes and each class consists of 20 students. From this…

Q: A flower shop is about to close for the day when a customer walks in a hurry and asks for a bouquet…

A: Answer - The shop owner has  12   yellow roses and   13   red roses left after a busy day, Total =…

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Q: A teacher of a class of 25 students is trying to decide whether her class will play soccer, or…

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Q: Out of a group of 10 patients treated with a new drug, 4 suffered a relapse. If 3 patients are…

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Q: Suppose you are going to form a committee of students and faculty. You have 12 total students and 24…

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Q: In a large population, 55% of the people have been vaccinated. If 3 people are randomly selected,…

A: Let "X" be the people that have been vaccinated.

Q: 7 total students and 20 total faculty to pick from. You want to have 10 total people on the…

A: Given data: Total number of students = 7 Total number of faculty = 20 Number of people to be…

Q: adrian has 5 keys on a key chain and one of the keys is used to unlock his office door. if adrian…

A:

Q: In a business, 24 employees feel they get enough breaks out of a total of 53. If you select 3…

A: GivenTotal no. of employees = 53No.of employees feel they get enough breaks = 24No.of employees feel…

Q: The probability that a house in an urban area will be burglarized is 6​%. If 47 houses are randomly​…

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Q: A bag has 12 different-colored marbles: 4 green, 5 blue, 1 yellow, and 2 orange. You draw a marble…

A: Given that,  4 green, 5 blue, 1 yellow, and 2 orange Marbles.  Total number of marbles = 4+5+1+2 =…

Q: vision game show has 9 ​doors, of which the contestant must pick 3. Behind 2 of the doors are…

A: behind 2 doors the  expensive cars  behind 7 doors the consolation prizes total 9 doors   select 3…

Q: Kiara sets up a passcode on her smart phone, which allows for 7 digits. She was informed that using…

A: Given: A smartphone allows 7 digits password she is a digit twice makes the phone more secure.

Q: A class consists of 10 males and 30 females. If one student is randomly selected from the class,…

A: We have given the  that  10 males  30 females  Total = 40

Q: A person conducting telephone surveys must get 3 more completed surveys before their job is…

A: There is 20% chance of completing the phone survey

Q: There is a jar of coins sitting on the table in the center of the room. The jar contains 9 pennies,…

A: given data   jar contains : 9 - pennies    1 cent 12 - nickles  - 5 cent 10 - dimes  - 10 cent 5 -…

Q: find the probability that only three have traveled to Italy.

A: Let p be the probability that a tourist have traveled to Italy. Given that p = 0.55 Let X denotes…

Q: A box has 18 blue hats and 30 red hats. If you pick 2 hats without replacement, what is the…

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Q: A box contains 15 batteries of which 5 are still working. Anne starts picking batteries one at a…

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Q: In a blood testing procedure, blood samples from 4 people are combined into one mixture. The mixture…

A: Obtain the probability that mixture will test positive.   The probability that that mixture will…

Q: A box has 20 green hats and 15 blue hats. If you pick 3 hats without replacement, what is the…

A: Given,no.of green hats=20no.of blue hats=15total no.of hats=35

Q: A couple goes on the bus together and spots 6 empty seats in a row.  As they go towards the seats,…

A: Total number of ways of seating order = 6!= 720

Q: On a vocabulary quiz, Elena must match a word with its definition. There are 5 words and 5…

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