A student must take a multiple choice exam with only one answer, the exam consists of 20 questions with 4 answer options each, suppose that the student did not prepare for the exam and will answer randomly. a. Find the probability that the student will win the test. b. How many questions are you expected to answer to get the fifth correct answer?

Q: A bag contains 9 black, 5 red, 7 white, and 4 purple balls. What is the probability of choosing: A…

A: We A and B are mutually exclusive then  P(A or B )=P(AUB)=P(A)+P(B)

Q: Julie draws a card at random from a standard deck of 52 playing cards. Determine the probability of…

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Q: Florence runs a day care centre. Of the last 15 children to enrol at the day care centre, 3 of them…

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Q: You draw two cards from a standard deck of 52 cards and replace the first one before drawing the…

A: Total cards = 52 Probability of getting king, There are total 4 kings So P(King)= 4/52 = 1/13…

Q: A student takes a four-question, True or False quiz and guess at every answer. What is the…

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Q: Steve has 12 biscuits in a tin. There are 5 digestive and 7 chocolate biscuits. Steve takes two…

A: Given that, Total number of biscuits = 12 5 digestive biscuits and 7 chocolate biscuits We to find…

Q: John runs a computer software store. He counted 120 people who walked by his store in a day, 50 of…

A: Given total 50, only 21 bought something in the store.

Q: There are 9 people in a group. They are picking straws to see who has to clean the house. If 1 more…

A: Total number of persons in the group originally = 9 When 1 women entered in the group then  Total…

Q: Find the probability of getting  3  face cards (king, queen, or jack) when  3  cards are drawn from…

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Q: In a poker hand consisting of 5 cards, find the probability of holding (a) 2 aces; (b) 1 heart and 4…

A: (a) The standard deck consists of 52 cards, in which there would be 4 ace cards and 48 non-ace…

Q: Determine the probability of being dealt 21 with the first two cards dealt from a new deck.  Present…

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Q: Two letters are randomly chosen from the word TIME. Find the probability that the letters are T and…

A: two letters are randomly selected from the word TIME total letters =4proabbility that the selected…

Q: At bedtime, you read three books to your kids, Walker, Michael, and Luke. Together, they have 3232…

A: Given that  Number of books=32 books  3 books are randomly selected  We have to find the probability…