The expected value and variance for the number of points


On a multiple choice test, there are 8 questions worth 12.5 points each. There are four choices for each question (a,b,c,d). Robin has not studied for the quiz and decides to randomly guess on all of the questions.

1. The probability that Robin will answer fewer than 3 questions correctly.

2. The expected value and variance for the number of points that Robin will score on the exam.

Solution Preview :

Prepared by a verified Expert
Basic Computer Science: The expected value and variance for the number of points
Reference No:- TGS02919769

Now Priced at $10 (50% Discount)

Recommended (97%)

Rated (4.9/5)