The math professor gave the class a set of 12 review problems and told them that the midterm exam would consist of 6 of the 12 problems selected at random. If Mela memorized the solutions to 8 of the 12 problems but could not solve any of the other 4 problems, what is the probability that she got 4 or more problems correct in the exam?

The math professor gave the class a set of 12 review problems and told them that the midterm exam would consist of 6 of the 12 problems selected at random. If Mela memorized the solutions to 8 of the 12 problems but could not solve any of the other 4 problems, what is the probability that she got 4 or more problems correct in the exam?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

You took a test with 40 multiple choice questions. Each question had 5 choices. What is the probability that you get at least 28 questions correct if you guessed in all of them.
Find the indicated probability. A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly?
You took a multiple-choice math test where there were 10 questions and each question had 4 answers to chose from (but only one of them was correct). What is the probability that you get exactly 9 correct? Be sure to identify your variables.
A class contains 8 boys and 7 girls. The teacher selects 3 of the children at random and without replacement. Compute the probability that the number of girls selected exceeds the number of boys selected.
Bonnie and Connie are twins with identical purses. Bonnie needs 35 cents to pay for a parking meter. Suppose that Bonnie's purse has 5 quarters, 3 dimes, and 2 nickels while Connie's purse has 2 quarters, 5 dimes, and 3 nickels in it. Not being able to tell the difference between the purses, Connie picks one at random and grabs two coins from it. What is the probability that Bonnie picked her own purse given that she drew out enough change to pay for her parking meter? (Note: Bonnie needs to put in at least 35 cents to pay her parking meter.)
At the beginning of the semester, each of the 5 students in a class selected a nickname. Unfortunately, the instructor forgot how the given names of {A, B, C, D, E} matched up to their nicknames:{a, b, c, d, e}. Determine the probability that the instructor got none of the five matches correct.
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?
A lock consists of 3 dials, where each dial has 4 letters. What is the probability of guessing the right combination in one try? Kay has an 80% probability of making a free-throw in basketball, and each free-throw is independent. Kay gets to take 2 free-throws and must make both to win the game. What is the probability that Kay's team will win the game? Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch’s 200 cows. Instead of weighing all of the cows: Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50) Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50) What is Jo’s margin of error, rounded to the nearest whole number? (The formula is )
A teacher will pick 1 student at random from 25 for the lead in a play. What is the probability of a student, Jo, of winning?
A teacher will pick 1 student at random from 20 for the lead in a play. What is the probability of a student, Jo, of winning?
In a suitcase there are 5 orange, y green, (y+2) grey and 6 yellow pens. Probability of choosing one green pen from the given suitcase is 1/3. What is the sum of the number of green, grey and yellow pens?
If you are dealt five cards from a standard deck of 52 cards then find the probability of getting three tens and two aces.