A psychology quiz consists of ten true-or-false questions. If a student knows the correct answer to six of the questions but determines the answers to the remaining questions by flipping a coin, what is the probability that she will obtain a score of at least 90%? (Round your answer to three decimal places.)

Q: Suppose you have decided to play the lottery in a state where you choose 6 numbers from 1 to 36. If…

A: N = Universe = Number of ways to select 6 numbers from 1 to 36 M = Successful cases = Number of…

Q: A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer.…

A: Given: Number of questions = 10Probability of getting correct =1/2 =  0.5 (because it is a true -…

Q: Richard has been given a 9-question multiple-choice quiz in his history class. Each question has…

A: Givenn=9p=13=0.33 x~Binomial(n=9,p=0.33)P(X=x)=Cxnpx(1-p)n-x ;x=0,1,....,1

Q: A student randomly guesses the answers to a five-question true/false test. If there is a 50% chance…

A:

Q: A car insurance policy costs P7000 per year from an insurance firm. The insurer shall pay P10,000…

A: Policy cost is P 7000.  Accident Pay Probability Minor Accident 10000 0.20 Big accident 50000…

Q: Canadians is chosen, find the probability that fewer than 3 respondents will support the seal hunt.

A:

Q: A test contains two multiple choice questions, each question having four possible answers. If a…

A: The sample size n is 2.

Q: One professor grades homework by randomly choosing 5 out of 14 homework problems to grade. (c).…

A: Permutation and combination are the two important concepts in statistical probability. These two are…

Q: A test has three parts. Part A consists of nine true-false questions, part B consists of three…

A:

Q: In a large population, 53 % of the people have been vaccinated. If 4 people are randomly selected,…

A: Given information- Given problem is of binomial distribution. Probability of success, p = 0.53 No.…

Q: A bag contains 46 U.S. quarters and four Canadian quarters. (The coins are identical in size.) If…

A: Solution: From the given information, a bag contains 46 U.S. quarters and 4 Canadian quarters. Here,…

Q: A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer.…

A: Given : A student takes a ten-question true-false quiz  Probability of success,p = 0.5…

Q: ACcording to a study conducted by a public health school, a child seated in the front seat who was…

A: Given to a study conducted by a public health school, a child seated in the front seat who was…

Q: In one town, 52% of all voters are Republicans. If two voters are randomly selected for a survey,…

A:

Q: You are taking a 10 question multiple-choice test. If each question has four choices and you guess…

A: Given Data Probability of success,p =1/4 =  0.25 Probability of failure,q=(1- 0.25 )=…

Q: I need help with providing the formula and answer... Question: If your stats class contains 10…

A: 10 business majors 6 - biology majors 4 - math majors ________________________ 20 - total students…

Q: Suppose you are throwing a pair of fair dice. Each die has 6 sides numbered 1 through 6. If you…

A: The study is about throwing a pair of fair dice. The multiple of the value of each die after…

Q: In the US, 10.5% of the population is diabetic. What is the probability that in a random sample of…

A: Suppose p is the true proportion of diabetic people in the U.S.

Q: In a city of 140, 000 people, there are 11, 000 women. What is the probability that a randomly…

A: Answer: From the given data, Number of people in the city = 140000 Number of women in the city =…

Q: Of the cartons produced by a​ company, 9​%have a​ puncture, 3​% have a smashed​ corner, and 0.5​%…

A: Given : Let A : Cartons has a puncture P(A) = 9% = 0.09 Let B : Cartons has a smashed corner P(B) =…

Q: quiz has 5 multiple-choice questions. Each question has five alternatives. If the student knows…

A: Formula :

Q: For a story she is writing in her high school newspaper, Grace surveys moviegoers selected at random…

A: There are two categorical variables which are rating and age. Rating has 2 types which are thumbs up…

Q: The weatherman says that there is a 60% chance of rain today. a. What is the probability that it…

A:

Q: Suppose you take a 10 question quiz, with 4 options choices, only one is correct. What is the…

A: Given data:   The total numbers of questions are N=10. The numbers of options for a question are…

Q: Find the probability that: (a) a randomly selected radio lamp will last the warranty period; b) a…

A: Let us define some events A : radio is of first type. B : radio is of second type. E : radio lamp is…

Q: Maggie is practicing her penalty kicks for her upcoming soccer game. During the practice, she…

A: Sample size, n = 10Probability , p = 65% = 0.65

Q: A group of citizens were asked what kind of vehicle they like to drive. The results are summarized…

A: Given that contingency table. Now using this table find required probability.

Q: Write your answer as a fraction reduced to lowest terms and as a percent rounded to the nearest…

A: When a coin is tossed then there are 2 possible outcomes.The probability of tossing a coin and it…

Q: Meals are often served at a conference. At one conference: 50% went to breakfast 73% went to dinner…

A: According to the given information, we have P(breakfast) = 50%=0.50P(dinner) = 73% = 0.73P(breakfast…

Q: Jeannie took a week's vacation from school and never made up the work. She is guessing answers on a…

A: If each trial has only two possible outcomes, that is, success and failure, the probabilities of…

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.