rosieposie27
23.07.2019 •
Mathematics
If you guess the answers at random, what is the probability of getting at least two correct answers on a five-question true-or-false quiz?
Solved
Show answers
More tips
- H Health and Medicine How Many Ribs Do Humans Have?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- W Work and Career Мерчендайзинг – все, что нужно знать...
- O Other Everything You Need to Know About Kudyabliks...
- F Food and Cooking How to cook crayfish? Everything you need to know...
- F Food and Cooking Homemade kvass: recipe and brewing process...
- H Health and Medicine How to Choose the Right Tanning Cream?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- S Sport Running: How to Do It Right?...
Answers on questions: Mathematics
- M Mathematics If f(x) = –x2 + 3x + 5 and g(x) = x2 + 2x, which graph shows the graph of (f + g)(x)?...
- M Mathematics A rectangular parking lot has a perimeter of 874. The length is 8 more then twice the width, find the dimensions of the rectangle...
- M Mathematics Which hormones is released when blood glucose levels are too high?...
- M Mathematics Mrs. Omar runs the school tennis club she has a bin of tennis balls andRackets for every five tennis balls in the bin there are three tennis rackets draw a model to show the...
- M Mathematics Joey participated in a dance-a-thon. His team started dancing at 10 a.m and Friday and stopped at 6 p.m on Sunday. How many hours did joey’s team dance?...
- M Mathematics Vivan has brought along an altimeter to measue her evelation at different places in the valley. vivian first ride was the ferris wheel. when she sat on the wheel at its lowest...
- M Mathematics Simplify the expression below. 9x + 10 - 2x + 1...
- M Mathematics Find 10% of the number 50...
- M Mathematics For the solution (x,y) to the system of equations what is the value of x- y? 7x+3y=8 6x-3y=5...
- M Mathematics Answer choice: A.)alternate interior angles B.) same-side interior angles C.)corresponding angles D.) alternate exterior angles...
Ответ:
True/false can be simulated as 1/2, or half the change of being correct.
Now if you put 1/2 to it’s fifth power, or (1/2)^5, since there are five questions.
The chances of getting ALL FIVE questions right is 1/32, now if you want to have two questions correct, which is 2/5 of the probability, then we would only need to raise the power to 3, since you we’re considering the other three would be definitely wrong
(1/2)^3 = 1/8
In result, the probability of getting 2 out of 5 questions correct is 1/8
Ответ: