February 21, 2017

Homework Help: statistic

Posted by tanya on Saturday, December 4, 2010 at 11:16pm.

Quiz has 6 questions. Each question has five possible answers,
only one of each 5 answers is correct.
If student randomly guesses on all six questions,
what is the probability to answer 2 questions right?

Tip: first, you have to define parameters of Binomial distribution:
n - how many trials/questions do you have
p - probability guessing right answer to each question
x - how many successes do you expect.
Then use Appendix Table or Excel function for Binomial distribution.

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions