Table of contents
- 1. Intro to Stats and Collecting Data55m
- 2. Describing Data with Tables and Graphs1h 55m
- 3. Describing Data Numerically1h 45m
- 4. Probability2h 16m
- 5. Binomial Distribution & Discrete Random Variables2h 33m
- 6. Normal Distribution and Continuous Random Variables1h 38m
- 7. Sampling Distributions & Confidence Intervals: Mean1h 3m
- 8. Sampling Distributions & Confidence Intervals: Proportion1h 12m
- 9. Hypothesis Testing for One Sample1h 1m
- 10. Hypothesis Testing for Two Samples2h 8m
- 11. Correlation48m
- 12. Regression1h 4m
- 13. Chi-Square Tests & Goodness of Fit1h 20m
- 14. ANOVA1h 0m
4. Probability
Counting
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
A student formed a club at their school. They have 13 members, and need to elect a president, vice president, and treasurer. How many ways are there to fill these officer positions?
A
2197
B
1716
C
13
D
6

1
Identify the total number of members available for selection, which is 13.
Understand that the positions of president, vice president, and treasurer are distinct, meaning the order of selection matters.
Use the concept of permutations to determine the number of ways to fill these positions. The formula for permutations is given by: , where n is the total number of items to choose from, and r is the number of items to choose.
Substitute the values into the permutation formula: .
Calculate the factorial values and simplify the expression to find the number of ways to fill the positions.
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