Assume that random guesses are made for 7 multiple-choice questions on a test with 2 choices for each question, so that there are n=7 trials, each with probability of success (correct) given by p=0.50. Find the probability of no correct answers.

Assume that random guesses are made for 7 multiple-choice questions on a test with 2 choices for each question, so that there are n=7 trials, each with probability of success (correct) given by p=0.50. Find the probability of no correct answers.

Name: Assume that random guesses are made for7multiple-choice questions on
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: Assume that random guesses are made for7multiple-choice questions on a test with2choices for each question, so that there aren=7trials, each with probability of success (correct) given byp=0.50.Find the probability of no correct answers.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: The Pew Research Center reports that they are only able to contact 76% of randomly selected…

A: From the provided information, The Pew Research Center reports that they are only able to contact…

Q: SAT test has 10 multiple choice questions with four choices with one correct answer each. if you…

Q: Mark draws a card from a deck 10 times, with replacement. Of the cards drawn, he sees 3 Heart cards.…

A: Number of Cards in deck = 52 Number of Hearts = 13 On one draw, P(drawing a heart) = 13/52 = 0.25…

Q: There are 5000 people in a village. 2000 were diagnosed sick. I am wrong 20% of the time. If you are…

Q: Two six sided dice were rolled twenty times. According to the experiment, the probability of rolling…

A: n=20,p=20%=0.20X~Binomial(n=20,p=0.20)Let X be the number of rolling doubles.p be the probability of…

Q: thirty four percent of us adults have very little confidence in newspapers. You randomly select 8 US…

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of…

Q: What is the probability of getting 3 out of 5 questions right on a multiple choice exam, where each…

Q: In a large population, 59% of the people have been vaccinated. If 5 people are randomly selected,…

Q: A history class is comprised of 9 female and 4 male students. If the instructor of the class…

Q: A study indicates that 67% of students have have a laptop. You randomly sample 7 students. Find the…

A: Given that, The random variable X students have a laptop The probability of success is 0.67 p=0.67…

Q: A researcher knows that number of people having a rare gene is on average 0.5 per 1000 people. Find…

A: Given that The number of people having a rare gene is on average per 1000 people = 0.5 The number…

Q: Solve step by step in digital format 8.- A company that manufactures concrete slabs suspects that 2%…

A: Company manufactures concrete slabs : 2% of its production is defective Now suspension is correct…

Q: A student takes an exam containing 14 multiple choice questions. The probability of choosing a…

A: No. of multiple choice questions contained by the exam, The probability of choosing a correct answer…

Q: A history class is comprised of 8 female and 6 male students. If the instructor of the class…

Q: One thousand (1000) elderly males and 2500 elderly females were randomly selected for a dementia…

A: Introduction: It is given that among a sample of 1000 elderly males, 210 elderly males are diagnosed…

Q: A student has a 30% chance of getting a particular professor for a class. What are the odds of…

A: From the provided information, There is 30% chance a student getting a particular professor for a…

Q: The number of power outages at a retirement center has a mean of “a+1” outages per year. What is the…

A: The objective of this question is to find the probability of exactly 3 outages in a year and the…

Q: A magazine reported that 6 percent of all drivers talk on their cell phone while driv If 300 drivers…

A: Given data, p=6% =0.06 n=300 P(0.04<X<0.07)=?

Q: The average number of field mice per acre in a 5-acre wheat field is estimated to be 8. Find the…

A: Given The average number of field mice per acre in a 5-acre wheat field is estimated to be 8. Find…

Q: In a large population, 61% of the people have been vaccinated. If 5 people are randomly selected,…

A: From the given information, Sample size (n) = 5, Probability of success (p) = 0.61.

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 11 seeds are…

Q: The probability of success is 0.725. You take a sample of 760. What is the probability of getting…

A: Given data: p = 0.725 n = 760 To find: What is the probability of getting fewer than 538 successes…

Q: A car insurance company has n = 1600 policy holders. The expected claim paid to a policy holder…

Q: A student has a 40% chance of getting a particular professor for a class. What are the odds of…

A: Step 1: Identify the formula for odds given probabilityOdds (A) = P (A) / [1 - P (A)] Step 2:…

Q: A box contains 20 blue balls, m yellow balls and n green balls and the probability of selecting a…

Q: At the cartons produced by a company 3% have a puncture 6% have a smashed corner and 0.4% have both…

A: Given that , cartons produced by a company, 3% have a puncture, 6% have a smashed corner, and 0.4 %…

Q: A representative from volleyball team selects people from south until he finds a person who attended…

A: Given that p=0.20 X~Geometric(p=0.20)

Q: The national institute of mental health reports a 22% chance of an adult suffering from a…

A: Answer: From the given data, Sample size(n) = 8 P = 22% = 0.22

Q: In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the…

A: Given that, Probability = 0.57 Sample size, n = 6

Q: Suppose the probability of success is p=31%. What is the probability of 7 successes in 8 trials?

A: Let x follows binomial distribution with parameters n = 8 and p = 0.31 The pdf of binomial…

Q: coin is flipped three times. Y is a random variable that assigns 3 times the number of heads flipped…

A: We want to find numbers is assigned to HHT

Q: In a box of 30 chocolates, there are 5 chocolate covered cherries, 10 are filled with caramel, 15…

A: Since I eat the first piece, so this problem is using without replacement. I can pick any 2 pieces…

Q: A quiz consists of 10 multiple choice questions, each with 4 answer choices. If a student guesses on…

A: 1)Givensample size(n)=10p=14=0.25 (one correct option from 4 choices)Let "x" be that…

Q: A quiz contains 7 true or false questions. What is the probability of answering all questions…

A: Binomial distribution is discrete distribution that deals with the probabilities of success and…

Q: Find the probability of getting three or more cars that fail among six cars tested

A: Solution: To find: The probability of getting three or more cars that fail among six cars tested.?

Q: There are 14 red marbles, 9 white, and 10 black marbles in a box. What is the probability of…

Q: A history class is comprised of s female and 6 male students. If the instructor of the class…

A: Given: Number of females = 8 Number of males = 6 Total number of students = 8+6…

Q: In a family of five children, what is the chance that there are

A: Given information: The family of five children. P(boy)=P(girl)=1/2.

Concept explainers

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.

Topic Video

Question

Assume that random guesses are made for

multiple-choice questions on a test with

choices for each question, so that there are

n=7

trials, each with probability of success (correct) given by

p=0.50.

Find the probability of no correct answers.

Video Video

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Discrete Probability Distributions$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, probability and related others by exploring similar questions and additional content below.

Similar questions

Q6. In a Survey, 85% of the people interviewed were unaware that maintaining a healthy weight could reduce the risk of stroke. If 20 people are selected at random, find the probability that at least 15 people are unaware that maintaining a healthy weight could reduce the risk of stroke.
In a large population, 63 % of the people have been vaccinated. If 3 people are randomly selected, what is the probability that AT LEAST ONE of them has been vaccinated?Give your answer as a decimal (to at least 3 places) or fraction
If there are 7 red candies in a bag of 36 colored candies, what is the probability of getting a red candy as a Round to the nearest whole percent .
In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 71 % of the time. Find the probability that among 11 guests surveyed exactly 3 guests like to stay at an overnight lodge in the park. P(x = 3) =
Let X, Y, and Z be random variables, and let Cov(⋅,⋅) denote the covariance operator as usual. Suppose that the variance of X is 0.7, Cov(X,Y) = 0.4, Cov(X,Z) = 1.2, and Cov(Y,Z) = 0.8. Find each of the following to two decimal places. (a) Cov(3Y, 3X) (b) Cov(3Y + 3, 3X + 8Z)
A hacker breaking into a computer system has a 15% chance of breaking into a system in 2 minutes, a 25% chance after 5 minutes, and a 60% chance after 20 minutes. What is the expected time will take the hacker to get in?
Public Opinion reported that 5% of Americans are afraid of being alone in a house at night. If a random sample of 20 Americans is selected, find the probability that less than 3 people in the sample who are afraid of being alone at night.
thirty four percent of us adults have very little confidence in newspapers. You randomly select 8 US adults. Find the probability that the numbers of US adults who have very liitle confidence is less than 5
Divo was given a chance to win a prize by picking a rolled paper numbered 1, 2, 3, 4 and 5. If Divo has four chances to pick a number, find the probability that he picked an even number in the paper no more than two times on those four trials?
In the winter, guests who visit Yosemite National Park like to stay at an overnight lodge in the park 66 % of the time. Find the probability that among 7 guests surveyed exactly 5 guests like to stay at an overnight lodge in the park.P(x = 5)
the probability of winning on an arcade game is0.568. if you play the arcade game 22 times, what is the probability of winning more that 15 times?
Peter took an MCQ based test. He had not prepared for the test and ended up guessing the answer for each of the MCQ. The test had a total of 10 MCQS. Each MCQ had 5 possible answers for selection. After the test, she is interested in calculating the probability of getting exactly 6 questions correct on this test?