Shawn will take a 10-question multiple-choice quiz. Each question has 4 answer choices, and he must answer 6 questions correctly...

Shawn will take a 10-question multiple-choice quiz. Each question has 4 answer choices, and he must answer 6 questions correctly to pass the quiz. Shawn wants to know if guess is a good strategy for taking the quiz. Using probability, determine how many he is likely to guess correctly and if guessing is a good strategy.