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.

Attempt 1 of 3

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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

MAT-144 Mastery Check

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