Due to current pandemic we are having online classes, Harish is also having online classes. He is having a quiz this weekend. In the quiz, Harish either guesses (or) copies from net(or) knows the answer to a multiple-choice question with 4 choices. Probability that he makes a guess is 1/3. He copies the answer is 1/6. The probability that his answer is correct given that he copied it is 1/8. Find the probability that he knew the answer to the question. Given that he correctly answered it.

Q: A quiz consists of 6 multiple choice questions. Each question has 4 choices. A student who forgets…

A: Let X=the number of correct questions n=number of trials=6 p=probability of getting the correct…

Q: Michelle gets an average of 19 calls during her 8 hour work day. What is the probability that…

A: We have given thatMichelle gets an average of 19 calls during her 8 hour work dayNow, average per…

Q: Corey buys a bag of cookies that contains 4 chocolate chip cookies, 9 peanut butter cookies, 4 sugar…

A:

Q: Lots of games like tennis have a concept of deuce, where if the game is ties at the end you have to…

A: The probability of winning the game is obtained below:From the given information, there are two…

Q: A football quarterback enjoys practicing his long passes over 40 yards. He misses the first pass 40%…

A:

Q: According to a survey of American households, the probability that the residents own 2 cars if…

A: According to the provided data,

Q: A die is rolled five times. A 4 is considered “success" ,while all other outcomes are "failures”…

A:

Q: Clara is a medical assistant who gives 14 people a flu shot in one day. The probability of…

A: Givenn=14p=0.14x~Binomial(n=14,p=0.14)P(X=x)=(nx)×px×(1-p)n-x    ;  x=0,1,...,n

Q: Suppose that the probability that Bob has a flat tire is   56%.  Also, suppose that the probability…

A:

Q: Andre is 70% free throw shooter. If he attempts 20  foul shots, what is the probability that he…

A: Solution: Let X be the number of shots sink and n be the number of foul shots. From the given…

Q: A quiz consists of 2 true-false questions and 4 multiple-choice questions (each with 4 choices with…

A: Given data Quiz consists of 2 true-false questions 4 multiple-choice questions Total question = 2+4…

Q: If the probability that the Yankees will win a baseball game is 60%, find the probability that the…

A: The probability that Yankees will win a baseball game is 60%, that is PWinning=0.60.

Q: Alex decides to go to a casino and play his 3 favorite slot machines. He knows from experience that…

A: A probability is likelihood of occurrence of an event.

Q: 62 out of 136 people suffered some type of depression last year. Find the probability that if you…

A: Given n=5

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: if the probabilty that junior goes to the grocery store is 0.6 and the probability that he buys…

A: P(junior goes to the grocery store) = 0.6 P(buys strawberries given he is at the grocery store) =…

Q: Jack is going to guess at ten multiple-choice questions.  Assume that he has a 20% chance of…

A: Correctly guessing the question have probability equal to 0.2  Total number of questions 10 Let X is…

Q: Marco is a basketball player who succeeds 90% of his free throws. What is the probability that he…

A: the probability that Marco succeeds in minus 7 of his next 10 free throws, you can use the binomial…

Q: The chance of rain is 20%, the chance of it being sunny is 60%, and the chance of it being sunny and…

A: Let us denote  R=rain S=sunny Given that P(R)=20%=0.20, P(S)=60%=0.60, P(R and S)=10%=0.10

Q: Rohan, the bookworm plans on reading 8 books by next week. But he only reads novels, poetry, short…

A:

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: (9 points) A dodgeball team either wins, ties, or loses each game. If they lose a game, their…

A:

Q: What is the probability that she will not have to stop at the light all next week?

A: It is given that the probability that the light will be red is 65% = 0.65

Q: On a  3 day vacation the forecast predicts a 75% chance if rain. What's the probability of it…

A:

Q: Jared buys a bag of cookies that contains 9 chocolate chip cookies, 5 peanut butter cookies, 8 sugar…

A:

Q: Suppose that the probability that Bob has a flat tire is  20 %.  Also, suppose that the probability…

A: Let define the events as follows: A = Bob has a flat tire B = Bob will have a transmission failure A…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.