13. QUESTION: An examination consists of multiple-choice questions, each having five possible answers. Suppose you are a student taking the exam. and that you reckon you have probability 0.75 of knowing the answer to any question that may be asked and that, if you do not know, you intend to guess an answer with probability 1/5 of being correct. What is the probability you will give the correct answer to a question?

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Q: 6. The odds against an event E occurring are 4 to 3. What is the probability that E will occur?

A: Solution: 6. If the odds against an event are m: n, then the probability of occurring of an event is

Q: 22. A true/false test has 20 questions. If a student is simply guessing at the answers, a. On…

A: Utilising binomial distribution with n=20 and P=0.5

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A: Given,p=0.91

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Q: Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 18…

A: We have to find given probability.

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A: Here use normal approximation

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Q: Researchers suggest that 9.5% of females in Scotland have red hair. Approximately 10% of Scottish…

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A: Let X denote the number of matches postponed for the same reason in 2021.

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A: Given that P(A3) =0.55, p(A2 ∩A3) =0.30, P(A2) =0.40

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A: Note: " Since you have asked multiple sub-parts, we will solve the first three sub-parts for you. If…

Q: *9. A problem in statistics is given to five students A, B, C, D and E. Their What is the…

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Q: A security code consists of a person's first and last initials followed by four digits. What is the…

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Q: 39 - What is the probability that a coin never hits heads in the three-time tossing experiment? A)…

A: Solution: If coin is tossed 3 times the the sample space Ω is  Ω={HHH, HHT, HTH, THH, TTH,…

Q: Here are three pieces of information about a few different populations where we are interested in…

A: Given: There are three pieces of information about a few different populations where we are…

Q: i. What is the probability of randomly guessing exactly 8 questions correctly on a quiz consisting…

A: Definition

Q: 1) If you roll a fair dice, what is the probability of rolling "2" or "3" given that the number of…

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Q: 12. The manager of a retail store wants to determine the best method of staffing employees without…

A: ''Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 7 - The average number of matches in which Galatasaray football team's football matches were…

A: Here random variable is Poisson with rate 5 Required probability = P[X=3]   Correct answer is C)…

Q: Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following:…

A:

Q: The game "craps" is played as follows: A player rolls two fair six-sided dice. If their sum is 7 or…

A: Given information: Experiment is done as follows: Player rolls two fair six-sided dice. If the sum…

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A: Let : A:Mathematics and B:Chemistry Given : P(A)=0.30 , P(B)=0.20 , Our aim is to find the…