anonymous
  • anonymous
You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the experimental probability that you will guess exactly three out of five questions correctly? Type your answer below using complete sentences.
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
misty1212
  • misty1212
HI!!
misty1212
  • misty1212
binomial should work for this one
misty1212
  • misty1212
what is the probability you get any one question right?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

misty1212
  • misty1212
if you do not know, say so and i can tell you hint, there are 4 possible answers, only one is right
anonymous
  • anonymous
I really don't know..
misty1212
  • misty1212
one is right, out of four ratio is \(\frac{1}{4}\) i.e. the probability you get any one answer correct is \(\frac{1}{4}\)
misty1212
  • misty1212
you also need the probability you get any one answer incorrect you know that?
anonymous
  • anonymous
3/4?
triciaal
  • triciaal
|dw:1438222812257:dw|
misty1212
  • misty1212
yes it is \(\frac{3}{4}\) for wrong answers
misty1212
  • misty1212
now you want 3 out of 5, so 3 right, 2 wrong
misty1212
  • misty1212
probabiliy of getting any one answer right is \(\frac{1}{4}\) and you want 3 right so \((\frac{1}{4})^3\) also 2 wrong, so \((\frac{3}{4})^2\)
misty1212
  • misty1212
then then multiply by the number of ways to choose 3 out of 5 that is called "five choose three" sometimes written as \[\_5C_3\] or more commonly \[\binom{5}{3}\] and computed via \[\binom{5}{3}=\frac{5\times 4}{2}\]
misty1212
  • misty1212
final answer is \[10\times \left(\frac{1}{4}\right)^3\times \left(\frac{3}{4}\right)^2\] use a calculator
anonymous
  • anonymous
.009765625?
anonymous
  • anonymous
hello????/
anonymous
  • anonymous
i don''t know i didn't do it hold on
anonymous
  • anonymous
http://www.wolframalpha.com/input/?i=10*.25^3*.75^2

Looking for something else?

Not the answer you are looking for? Search for more explanations.