Register

Estimated probability of guessing correctly on more than 3 out of 5 true-false questions

Estimated probability of guessing correctly on more than 3 out of 5 true-false questions
asked 162k views
0 votes
Estimated probability of guessing correctly on more than 3 out of 5 true-false questions

asked
User Vladimir Potapov
by
8.5k points

1 Answer

2 votes
The probability of guessing 4 right is
.. (5C4)*(1/2)^5 = 5/32
The probability of guessing 5 right is
.. (5C5)*(1/2)^5 = 1/32

So, the probability of guessing 4 or 5 right is
.. (5+1)/32 = 6/32 = 0.1875
answered
User Granty
by
8.3k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
Link Copied!