In a multiple choice test, there are 10 questions. Each question has 4 choices, one of which is correct. Tom, who knows nothing

Question

In a multiple choice test, there are 10 questions. Each question has 4 choices, one of which is correct. Tom, who knows nothing about the subject, guesses each answer at random. Let $X) be the number of questions that Tom has actually guessed correctly. Find the mean and standard deviation of the \(X$- distribution.

Kunduz · Accepted Answer

Click to see the answer