A test has 10 multiple choice questions, and each question has 5 possible answers. How many answers do we expect a random guesser to get correct?

30% of students take Physics 101 and 20% take Math146. Of the students who take Physics 101, 25% also take Math146. If a student is chosen at random find P( student takes Physics101 and Math146) O a. 0.3 O b. 0.2 O c. 0.25 O d. 0.83 One 0.075

When taking a 19 question multiple choice test, where each question has 3 possible answers, it would be unusual to get_______  or more questions correct by guessing alone. Note: Of course it would be unusual to get 19 questions correct. You need to enter the smallest possible number of questions to make getting "that many correct" unusual.Give your answer in the box above as a whole number.

When taking a 6 question multiple choice test, where each question has 5 possible answers, it would be unusual to get ____ or more questions correct by guessing alone.Give your answer in the box above as a whole number.

There are 20 questions on a multiple choice exam, each with four possible answers. Which of the following has a greater chance of occuring for a student guessing on all twenty questions on this test?

The fractions of colors in a population of squirrels is 0.73 red and 0.27 black.   If two are chosen at random, what are the chances they have the same color? Give two digits past decimal.

There are 160 questions on a test, and they are all multiple choice questions with four possible answers. For each question, only one answer is correct. Find the mean number of correct answers for someone who make random guesses for all of the questions.

On a 9 question multiple-choice test, where each question has 4 answers, what would be the probability of getting at least one question wrong?Give your answer as a fraction

How many outcomes are possible on a 3 question, multiple choice quiz (with 3 choices each per question)?

A multiple choice test contains five questions, and each question has three possible answers. A passing grade is three or more correct answers. What is the probability of passing if you guess the answers at random?