MAT-144 · Topic 6 · Mastery Check

Probability

Four quick questions to check that Topic 6 clicked. Two multiple choice, two short calculations. Perfect score earns one substantive participation post.

What it checks

1Permutation vs combination
2Basic probability
3Empirical vs theoretical
4Combination

4 of 4 to pass 3 attempts 60 seconds between attempts One question at a time

For online sections. Whether a passed Mastery Check counts as a participation post is up to your instructor, so check with yours.

Your full name

It goes on your certificate, so use the name your instructor sees in Halo. That's how your post gets matched to you for participation.

Enter your first and last name to start.

Question 1 of 4

Question 1 · Permutation vs combination

Which situation calls for a permutation rather than a combination?

A. Choosing 3 books to bring on vacation from a shelf of 10 books B. Selecting a committee of 5 people from a group of 20 C. Assigning 1st, 2nd, and 3rd place medals in a race D. Picking a hand of 5 cards from a 52-card deck

Question 2 · Basic probability

What is the probability of rolling an even number on a fair 6-sided die? Round to two decimals.

Enter the probability as a decimal, rounded to two places

Question 3 · Empirical vs theoretical

You flip a fair coin 10 times and record 6 heads. Based on this experiment, what is the empirical probability of getting heads?

A. 0.5 B. 0.6 C. 0.4 D. 0.1

Question 4 · Combination

How many different 3-person committees can be formed from a group of 10 people (order does not matter)?

Enter the number of committees as a whole number

All answered.

Submitting uses one attempt.