A quiz consists of 10 true or false questions. To pass the quiz a student must answer at least eight questions correctly. If the student guesses on each question, what is the probability that the student will pass the quiz? 0.20 0.08 0.8 0.055

Q: a job interview, find the probability that less than three (<3 or 0,1,2) people have come for an…

A: here given, on average 3 persons come to ABC company for job interview so λ = 3 persons per day here…

Q: An unprepared student takes a 15 question true-false quiz and guesses at the answer to every…

A: Given Data Probability of success,p = 0.5 Probability of failure,q=(1- 0.5 )= 0.5…

Q: In a 30-day period, an average of 6 thefts occur in a store. Within the next 10 days, a) What is…

A:

Q: The probability of a woman developing breast cancer over a lifetime is about 1/9.  (a)  What is the…

A:

Q: A single card is drawn from a standard deck of 52 playing cards. Find the probability the card is a…

A: Given Total no. of cards in a deck =52No.of numbered cards in a deck=36

Q: a student flips a coin four times.what is the probability the coin lands tails up exactly one time

A:

Q: The HOD asked the professor to show him 4 answer books without "A", The professor complained that he…

A: The probability of the event is,   probability=Number of ways to event occurTotal number of possible…

Q: Nextel Directory Assistance has a tendency to give Wrong Answers 36% of the time, If you Request…

A: Let a random experiment be performed repeatedly, each repetition is called a trial. let the…

Q: A basketball player with a history of making 80% of the foul shots taken during games. What is…

A: Given that n =7 , p= 0.80 Find P ( X =5 ) =?

Q: A bowl of candy contains 22 toffees, 26 mints, 41 jujubes, and 58 jellybeans. Richard picks a candy…

A:

Q: Nine people, named Anna, Bob, Chandra, Darlene, Ed, Frank, Gina, Hank, and Irene, will be…

A: Total number of people who attend the interview = 9   The probability of an event A is: P(A) =…

Q: If you flip a coin four times, what is the probability of getting at least a head and at least a…

A: Given that, Coin flip four times.

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: We throw five symmetrical coins. Calculate the probability of getting no more than two eagles.

A: From the given information we find the probability.

Q: A bag contains 2 red marbles and 5 white marbles. What is the probability of drawing two red marbles…

A: What is the probability of drawing two red marbles at random if the first marble drawn is not…

Q: Find the probability that more than 20% of the sample are from poverty-level households.

A: Given,sample size(n)=300sample proportion(p^)=0.22

Q: You own 6 distinct pairs of shoes but keep all the individual shoes mixed up in the closet. Suppose…

A: If there are n mutually exclusive, exhaustive and equally likely outcomes of a random experiment and…

Q: You have a campus errand that will take only 15 minutes. The only parking space anywhere nearby is a…

A:

Q: If a baseball player has a batting average of 0.275, what is the probability that the player will…

A: We have given that  average(λ)= 0.275

Q: Tiles containing the letters for the word “ENCYCLOPEDIA” are placed in a bag. If you reach into the…

A:

Q: A bag contains 45 U.S. quarters and five Canadian quarters. (The coins are identical in size.) If…

A: Given, No of U.S quarters= 45 No of Canadian quarters= 5 Total quarters= 50 If 5 quarters are drawn…

Q: A baseball player has a lifetime batting average of 0.213. If, in a season, this player has 365 "at…

A:

Q: In a certain​ lottery, you must correctly select 6 numbers​ (in any​ order) out of 25 to win. You…

A: It is given that there are 25 numbers and of them 6 numbers is selected in any order.

Q: 10. If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 are…

A: we have to find the probability that all 3 are hearts .from a shuffled deck of 52 cards .

Q: 4. Toss a coin 100 times, find the probability that a Head will appear at most 43 times?

A: Given Let define a random variable X as, X: The number of times Head appears in experiment of…

Q: Flip a fair coin 180 times. Estimate the probability of obtaining more than 120 heads.

A: From the provided information, Sample size (n) = 180 and The probability of getting a head = 1/2 =…

Q: An exam contains five " true or false" questions. What is the probability that a student guessing at…

A: If an experiment is performed with possible outcomes as either success or  failure and the…

Q: A dish contains 2 yellow, 4 red, 5 purple, 2 green, and 3 orange candies. You grab a handful of 9…

A:

Q: 8 people are taking a driving test. If the probability of passing the test is 0.75. What is the…

A:

Q: The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to…

A:

Q: One card is selected at random from a deck of cards. Determine the probability that the card…

A:

Q: Question Alex receives 55 emails a day. Out of the 55 emails, 12 emails are spam. If Alex opens 6…

A: Given that Total number of emails = 55 Number of spam emails = 12

Q: A couple decided to have 5 children. (a) What is the probability that they will have at least one…

A:

Q: You own 6 distinct pairs of shoes but keep all the individual shoes mixed up in the closet. Suppose…

A: To find the probability that you will get no matching pairs :

Q: The Edmonton Oilers win 70% of their games if they score first, but only 40% of their games if the…

A:

Q: A couple decided to have 3 children. (a) What is the probability that they will have at least one…

A:

Q: The average number of field mice per acre in a wheat field is estimated to be 1.2. Find the…

A: Given, The average number of field mice per acre in a wheat field is estimated to be 1.2. The…

Q: The probability that an adult possesses a credit card is .65. A researcher selects three adults at…

A:

Q: A single card is drawn from a standard deck of 52 playing cards. Find the probability the card is…

A: From the provided information, A single card is drawn from a standard deck. Total cards in standard…

Q: 1 be a probability? Can the value

A: Yes

Q: A couple decided to have 4 children. (a)  What is the probability that they will have at least two…

A: Couple has decided to have 4 children. Probability of a child being boy = Probability of a child…

Q: If a person takes a five questions true-false, what is the probability of the event that the score…

A: For the given statement

Q: A quiz consists of six true-or-false questions; at least four correct answers are required for a…

A: Assume that the questions are answered randomly. The probability of getting a question correct is…

Q: A baseball player has a lifetime batting average of 0.213. If, in a season, this player has 365 "at…

A:

Q: d) A telemarketer will give an average of 4 calls in an hour. Find the probability that he will give…

A: Given that  1 hour  = 60 minutes  1.5 hours = 90 minutes Average calls in an hour=4 Average calls in…

Q: A couple decided to have 3 children. (a) What is the probability that they will have at least two…

A:

Q: A coin is tossed six times. What is the probability of obtaining four or more heads ?

A:

Q: The identification code on a bank card consists of 1 digit followed by 2 letters. The code must meet…

A:

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 multiple-choice test contain 9 questions, each with five options. Suppose that a student just…

A: From the given information we find the probability that student guess at most 1 question correctly.

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.