What is the probability of a correct guess on the first try?

Q: A thief steals an ATM card and must randomly guess the correct four-digit pin code from a 6-key…

A: The permutation is an arrangement of objects in a pre-defined order or placement. When repetition is…

Q: Sarah is about to draw a card at random from a standard deck of 52 playing cards. If he draws a…

A:

Q: A lock consists of 3 dials, where each dial has 5 letters. What is the probability of guessing the…

A: Total number of dials in the lock is 3. Number of letters each dial have is 5.

Q: The digits 5, 6, 7, 8, and 9 are randomly arranged to form a three-digit number. (Digits are not…

A: Given The digits 5, 6, 7, 8, and 9 are randomly arranged to form a three-digit number. (Digits are…

Q: A 7​-question ​multiple-choice quiz has 5 possible answers for each question. Only one of the 5…

A:

Q: You are to flip a fair coin, where probability of heads is equal to 50% (and tails is 50%). The fair…

A: Answer:- Given, The probability of head , P(H) = 50% = 0.50  The fair coin is flipped, n = 100000…

Q: Find the probability of answering the two multiple choice questions correctly if random guesses are…

A: The probability shows how likely an event occurs.

Q: What score is expected?

A: Here use binomial distribution

Q: A box contains 5 red marbles, 6 white marbles, and 8 blue marbles. If a marble randomly selected…

A: Given that Red marble = 5 White marble = 6 Blue marble = 8 Total marble = 6 + 5 + 8  = 19

Q: A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 5-key…

A: There are 5 keys on keyboard. If the repetition of digits is allowed, then, the number of possible…

Q: Suppose you have 10 tennis balls and you randomly pick some number of them. What is the probability…

A: Given the event that there are 10 tennis balls and one randomly pick some number of them.

Q: A student takes a 10-question multiple choice exam with three choices for each question and guesses…

A: Givensample size(n)=10p=13                     (since 1 correct choice from 3 choices)Let "x" be the…

Q: A thief steals an ATM card and must randomly guess the correct three-digit pin code from a 10-key…

A: It is 10-key keypad and hence it has 10 numbers.

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: yellow Labrador retrievers. If 8 puppies are selected at​ random, determine the probability they are…

A: Given Total number of puppies=20

Q: Imagine that your ATM card had a 4 digit code, but you can only choose from 7 options, i.e. the…

A: Given: ATM card had a 4 digit code and had numbers from 1-7. The repetition of digit is allowed.

Q: What is the probability of correctly predicting the first four runners to complete the race, in the…

A:

Q: Assume that you guess on each question of a multiple choice test. There are 12 questions and each…

A: Given Data: The number of questions is: n=12 The possible answers to each question are: r=4 The…

Q: A thief steals an ATM card and must randomly guess the correct seven-digit pin code from a 4-key…

A: find the probability of a correct guess on the first​ try There are only 4 keys in the key pad, so…

Q: A lock consists of 4 dials, where each dial has 6 letters. What is the probability of guessing the…

A:

Q: thief steals an ATM card and must randomly guess the correct four-digit pin code from a 7-key…

A: Given Information: A thief steals an ATM card. He must randomly guess the correct four-digit pin…

Q: Julia sets up a passcode on her tablet, which allows only eight-digit codes. A spy sneaksa look at…

A: According to the provided data, the passcode allows only eight digit codes. As the fingerprints on…

Q: A lock consist of 4 dials. Where each dial has six letters. what is the probability of guessing the…

A: From the provided information, A lock consists of 4 dials, where each dial has six letters.

Q: multiple-choice quiz has 10 questions, each will 4 possible answers. A student answers each…

A:

Q: An urn contains three blue balls and five green balls. Another urn contains four blue balls and five…

A:

Q: Find the probability of getting three of a kind when playing five card poker

A: Given Playing 5 card poker

Q: I forgot the last digit of a 7-digit telephone number. If 1 randomly dial the final 3 digits after…

A: We have given that the last digit of a 7-digit telephone number and the final 3 digits are randomly…

Q: A lock consists of 2 dials, where each dial has 4 letters. What is the probability of guessing the…

A: Experiment : Guessing the combination Event: Guessing the right combination.

Q: Camilia sets up a passcode on her tablet, which allows only nine digit codes. A spy sneaks a look at…

A: According to the question, the password has a 9 digit code. Given that the spy sees her fingerprints…

Q: A dog breeder has 19 puppies for​ sale, of which 10are yellow Labrador retrievers. If 8 puppies are…

A: Probability: Probability is a chance factor that occurs at every outcome of a random experiment.…

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.