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Ch. 3 - Probability
Larson - Elementary Statistics: Picturing the World 8th Edition
Larson8th EditionElementary Statistics: Picturing the WorldISBN: 9780137493470당신이 사용하는 게 아니라요?교과서 변경
3장, 문제 3.R.5

"In Exercises 5 and 6, use the Fundamental Counting Principle.
5. A student must choose from seven classes to take at 8:00 A.M., four classes to take at 9:00 A.M., and three classes to take at 10:00 A.M. How many ways can the student arrange the schedule?"

검증된 단계별 안내
1
Understand the Fundamental Counting Principle: This principle states that if there are multiple events, and each event has a certain number of outcomes, the total number of outcomes is the product of the outcomes for each event.
Identify the events in the problem: The student is choosing one class for each of three time slots: 8:00 A.M., 9:00 A.M., and 10:00 A.M.
Determine the number of choices for each event: The student has 7 choices for the 8:00 A.M. class, 4 choices for the 9:00 A.M. class, and 3 choices for the 10:00 A.M. class.
Apply the Fundamental Counting Principle: Multiply the number of choices for each time slot. This can be expressed as: 7 × 4 × 3.
Interpret the result: The product of these numbers represents the total number of ways the student can arrange their schedule.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
2m
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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Fundamental Counting Principle

The Fundamental Counting Principle states that if there are 'm' ways to do one thing and 'n' ways to do another, then there are m × n ways to perform both actions. This principle is essential for calculating the total number of combinations or arrangements in scenarios where multiple choices are involved.
추천 영상:
04:04
Fundamental Counting Principle

Combinations

Combinations refer to the selection of items from a larger set where the order does not matter. In the context of the question, the student is choosing classes, and the specific order of selection is irrelevant, making combinations a key concept for determining the number of possible schedules.
추천 영상:
05:22
Combinations

Permutations

Permutations involve the arrangement of items where the order does matter. While the question primarily focuses on combinations, understanding permutations is important for grasping how different arrangements can affect the total count of possible schedules, especially if the order of classes were to be considered.
추천 영상:
07:11
Introduction to Permutations
관련 실천
교과서 질문

In Exercises 45-48, use combinations and permutations.

46. Five players on a basketball team must each choose one of the five players on the opposing team to defend. In how many ways can the players choose their defensive assignments?

100
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교과서 질문

"In Exercises 1-4, identify the sample space of the probability experiment and determine the number of outcomes in the event. Draw a tree diagram when appropriate.

1. Experiment: Tossing four coins

Event: Getting three heads"

93
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교과서 질문

"In Exercises 1-4, identify the sample space of the probability experiment and determine the number of outcomes in the event. Draw a tree diagram when appropriate.

4. Experiment: Guessing the gender(s) of the three children in a family

Event: Guessing that the family has two boys"

100
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교과서 질문

In Exercises 49-53, use counting principles to find the probability.

50. A security code consists of three letters and one digit. The first letter cannot be A, B, or C. What is the probability of guessing the security code on the first try?

87
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교과서 질문

In Exercises 49-53, use counting principles to find the probability.

52. A class of 40 students takes a statistics exam. The results are shown in the table at the left. Three students are selected at random. What is the probability that

d. all three students received a B or a C?

66
views
교과서 질문

In Exercises 49-53, use counting principles to find the probability.

52. A class of 40 students takes a statistics exam. The results are shown in the table at the left. Three students are selected at random. What is the probability that

b. all three students received a C or better?

111
views