At Least One Correct Answer If you make random guesses for 10 multiple choice SAT test questions (each with five possible answers), what is the probability of getting at least 1 correct? If these questions are part of a practice test and an instructor says that you must get at least one correct answer before continuing, is there a good chance you will continue?

Q: Dogs Cats Total Old 40 70 110 Young 10 30 40 Total 50 100 150

A: Let, 1] N1 Number of dogs in the sample (Sample-1)    N1=502] N2 Number of cats in the sample…

Q: Our class is creating a new academic team, the Data Managers. The team will have 4 members to…

A: Given that: Team = 4 members  Class want to be on the team  = 10 We pick a random out of 10

Q: Northside Middle school has 480 sixth-grade students; 55% are girls and 45% are boys. The school…

A: Define event G as the student is a girl. Define event B as the student is a boy. Define event O as…

Q: Rolling an even number or a number greater than 6

A: The sample space for two standard dice is given as:…

Q: Hard drives on a computing system have a 5% chance of crashing. Therefore, three backups have been…

A: we have to find correct answer..

Q: A tine test is commonly used to determine whether a person has been exposed to tuberculosis.…

A: A tine test is commonly used to determine whether a person has been exposed to tuberculosis.…

Q: About 7% of employed adults in the United States have multiple jobs. A random sample a 71 employed…

A: The sample size is 347, and population proportion is 0.07. Checking conditions:…

Q: At Least One.  Find the probability. At Least One Correct Answer If you make random guesses for 10…

A: Definition:P (A and B) = P (A).P (B)P (Ā) = 1- P (A)

Q: A creative writing class compiled a list of their favourite superheroes. They listed each…

A: A=A superhero can throw fire B=A superhero is quick-tempered A and B=superhero can throw fire and is…

Q: B. Identify the probability values. _6. What is the probability of an event that is certain to…

A: A certain event is an event that is sure to happen. E is a certain event if and only if P(E) = 1. An…

Q: 2. A woman has given birth to triplets and the oldest one is a boy. (a) Create a sample space for…

A: Given that a women has given birth to triplets and the oldest one is a boy.

Q: A student takes a 10 question true false test he has not attended class nor study the material and…

A: We have to find given probability.

Q: b) A test subject is randomly selected and is given a pregnancy test. What is the probability of…

A: Given that    Positive test results (Pregnancy is indicated) = A  Negative test result…

Q: Voters will decide a statewide referendum soon and must vote either “Yes” or “No.” You want to draw…

A: Given: The sample value is drawn in which the percentage value gets computed based on the vote is…

Q: There are 20 AAA batteries in a box and 6 are defective. Two batteries are selected without…

A: The number of batteries selected at random is 2.

Q: Three men are seeking public office. Candidate A andB are given about the same chance of winning,…

A:

Q: Students attending an international event were asked if they can speak Arabic or Chinese. 25% speak…

A: From the given data,  Probability of students speak Arabic, P(A) =25%=0.25 Probability of students…

Q: Felix states that he is able to distinguish a freshly ground coffee blend from an ordinary…

A:

Q: Did the subject actually lie? No (did not lie) Yes (did lie) The polygraph test…

A: For the given data Find If one of the subjects is randomly selected, find the probability of…

Q: An experiment consists of tossing an unfair coin (40% chance of landing on heads) a specified number…

A: Given: The probability of heads is given as 0.40 Thus the probability of tails is 1-0.40 = 0.60 The…

Q: A psychology class consists of 32 freshmen and 48 sophomores. If the professor selects names from…

A: There are 32 freshmen and 48 sophomores. The total number of students is 32+48=80. 1. The…

Q: Pick a new car or truck at random and observe its color. Here are the odds of the most popular…

A: Required probability is P(a chosen car color is siver or white)

Q: Two cards are selected from a standard deck of 52 playing cards. The first card is not replaced…

A: Total number of cards in a deck = 52 Number of twos in a deck = 4 Number of threes in a deck = 4

Q: SA man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 22 times, and…

A: A man having ESP guessed that 18 correct out of 22 flips We need to find the probability that he…

Q: Question Help The probability that a randomly selected 4-year-old male stink bug will live to be 5…

A: Given Probability of randomly selected 4 year male stink birds to live to be 5 year old P = 0.97449

Q: For the daily lottery game in Illinois, participants select three numbers between 0 and 9. A number…

A: a. We assume that such numbers as 012 are also three digit numbers. The first number can be selected…

Q: ie pasta. Your side choices are mashed potatoes, wild rice, or a salad. 1. How many possible entrée…

A: 1. In a restaurant entrée contain four choices that are fried chicken, beef roast, grilled fish, and…

Q: 26 sided dice are rolled what is the probability that the sum of two numbers on the dice will be…

A:

Q: 1) A student takes a multiple-choice test that has 40 questions. Each question has 5 choices. The…

A: Here, n = 40 and p = 0.2.

Q: A teacher offers gift cards as a reward for classroom participation. The teacher places the gift…

A: Permutation and combination used to calculate the number of possible ways to arrange or select a…

Q: 18. Suppose you flip a coin. What is the likelihood the coin will land heads up (qualitative)? What…

A: We have to find probability..

Q: After high school graduation you decide to become a chicken farmer. You experiment with several…

A: Given: Number of eggs (n) = 12 Probability of a broken egg (p)= 0.40 Let X be the binomial random…

Q: dealt one card from a standard 52-card deck. Find the probability of being dealt a card greater than…

A:

Q: The probability that an adult possesses a credit card is .45. A researcher selects seven adults at…

A: The probability that at least three have credit card.

Q: Internet Doctors: Assume that 55% of adults learn about medical symptoms more often from the…

A:

Q: A teacher offers gift cards as a reward for classroom participation. The teacher places the gift…

A: Solution

Q: A bag contains 18 toy cars that are the same shape and size. of the cars are blue • 50%of the cars…

A: Given Data; n=18 P(Blue)=1/3 P( Green)=0.5

Q: 30. Designing Experiment Clinical trials of Nasonex involved a group given placebos and another…

A: To obtain a treatment group it is needed to select 6 subjects out of 12 subjects.

Q: Voters will decide a statewide referendum soon and must vote either “Yes” or “No.” You want to draw…

A: Given, sample proportion (p)=0.60 Margin of error (M.E)= 0.02 Confidence level (CL)=0.95 Therefore,…

Q: A company requires all job applicants to undergo drug testing for employment. If the applicant has…

A: The given probabilities are P(positive result given drugs has been used)=0.90P(negative result given…

Q: A fair coin is tossed 3 times in succession. The set of equally likely outcomes is {HHH, HHT, HTH,…

A:

Q: Visitors to your website are asked to answer a single “yes or no” survey question before they get…

A:

Q: A quick quiz consists of a multiple-choice question with 3 possible answers followed by a…

A: Given that  Let A denotes a quiz consists of multiple choice question with 3 possible answers  And B…

Q: Suppose you have a jar with 20 marbles. 14 marbles are red, and 6 marbles are blue. You draw…

A: Given,no.of red marbles=14no.of blue marbles=6Total no.of marbles=20

Q: The personal identification numbers (PINs) for automatic teller machines (ATMs) usually consist of…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Approximately 20% of all Americans smoke. Suppose two Americans are selected at random. What is the…

A: Approximately 20% of all Americans smoke and two Americans are selected at random.

Q: A standard admissions test was given at three locations. One thousand students took the test at…

A: Given:  P(A) = 10001000+600+400 = 0.50, P(B) = 6002000= 0.30, P(C) = 4002000= 0.20

Q: bag contains 38 U.S. quarters and twelve Canadian quarters. (The coins are identical in size.

A:

Q: Q1: Blood type AB is found in only 3% of the population. If 250 people are chosen at random, what is…

A: Given: Probability of success (p) = 3% = 0.03 Number of people (n) = 250 Consider X be the binomial…

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.