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Suppose a person is randomly selected. Label each pair of events as mutually exclusive or not mutually exclusive. a. The person is 40 years old; the person is not old enough to drink alcohol legally b. The person plays tennis; the person plays the cello.

Short Answer

Expert verified
Based on the analysis, the events in part a are mutually exclusive, as a person cannot be 40 years old and not legally able to drink. The events in part b are not mutually exclusive, as a person can play tennis and also play the cello.

Step by step solution

01

Event Pair Analysis - Part a

Consider the first pair: 'The person is 40 years old' and 'The person is not old enough to drink alcohol legally'. In most jurisdictions, the legal age to drink alcohol is typically less than 40 years old. That means in the same time, a person cannot be 40 years old and not legally able to drink. The events are mutually exclusive because they cannot both occur at the same time.
02

Event Pair Analysis - Part b

In the second pair: 'The person plays tennis' and 'The person plays the cello'. These two events can occur at the same time. A person can play tennis and also play the cello, as these activities do not limit or exclude each other. So these events are not mutually exclusive.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Probability
Probability is a fundamental concept in statistics that measures how likely an event is to happen. It ranges from 0 to 1. A probability of 0 indicates that the event will not happen, and a probability of 1 means the event will certainly occur. For instance, when flipping a fair coin, the probability of landing heads is 0.5 or 50%, because there are two equally likely outcomes - heads or tails.

To calculate probability, the number of favorable outcomes is divided by the total number of possible outcomes. For example, if a die is rolled, the probability of rolling a 4 is calculated as 1 out of 6 possible outcomes, resulting in a probability of about 0.167. Mutually exclusive events relate to probability. If two events are mutually exclusive, the probability of these events occurring together is 0. This concept simplifies calculating probabilities of compound events because if two events cannot occur simultaneously, their combined probability is simply the sum of their individual probabilities.
Event Pair Analysis
Event pair analysis is a method used to determine whether two events can happen simultaneously or if they are mutually exclusive. In simpler terms, we analyze if two events can occur at the same moment or if the occurrence of one prevents the other.

To illustrate this, let's discuss the events given:
  • First, consider the event of a person being 40 years old and not old enough to drink legally. In most places, people can legally drink well before reaching 40 years old, so the two events cannot happen at the same time. Thus, they are mutually exclusive.
  • On the other hand, consider the events that a person plays tennis and plays the cello. There is no logical restriction or condition that prevents a person from engaging in both activities. Hence, the events can occur simultaneously, making them not mutually exclusive.
Understanding event pair analysis helps in predicting how different conditions can or cannot coexist, which is crucial in fields like risk management and strategic planning.
Statistics Education
Statistics education is vital in providing individuals with the tools to understand and make informed decisions based on data. Concepts such as probability and event pair analysis are foundational elements of statistics, helping students to handle real-life data scenarios logically and efficiently.

By learning to identify mutually exclusive events, students gain insight into how different outcomes influence one another. This understanding is essential when analyzing data sets and can improve students' problem-solving skills as well. Through statistical education, individuals are equipped not only to conduct analyses but also to interpret results effectively, enabling a deeper comprehension of the world around them.
Statistics education also involves practical applications, where learners use these concepts in experiments, surveys, and data collection to understand and predict trends.

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Most popular questions from this chapter

Suppose a student is selected at random from a large college population. a. Label each pair of events as mutually exclusive or not mutually exclusive. i. The students is a Chemistry major; the student works on campus. ii. The student is a full-time student; the student is only taking one 3-unit class. b. Give an example of two events that are not mutually exclusive when a student is selected at random from a large college population.

In California, about \(92 \%\) of teens who take the written driver's exam fail the first time they take it (www.teendrivingcourse.com). Suppose that Sam and Maria are randomly selected teenagers taking the test for the first time. a. What is the probability that they both pass the test? b. What is the probubility that Sam OR Maria passes the test?

Suppose all the days of the week are equally likely as birthdays. Alicia and David are two randomly selected, unrelated people. a. What is the probability that they were both born on Monday? b. What is the probability that Alicia OR David was born on Monday?

According to a Pew Research poll conducted in \(2016,55 \%\) of men and \(43 \%\) of women support the death penalty in cases of murder. Suppose these are accurate percentages. Now suppose a random man and a random woman meet. at. What is the probability that both support the death penalty? b. What is the probability that neither support the death penalty? c. What is the probability that only one of them supports the death penalty? d. What is the probability that at least one of them supports the death penalty?

A famous study by Amos Tversky and Nobel laureate Daniel Kahneman asked people to consider two hospitals. Hospital \(\mathrm{A}\) is small and has 15 babies born per day. Hospital B has 45 babies born each day. Over one year, cach hospital recorded the number of days that it had more than 609 girls bom. Assuming that \(50 \%\) of all babies are girls, which hospital had the most such days? Or do you think both will have about the same number of days with more than \(60 \%\) girls born? Answer, and explain. (Source: Tversky, Preference, belief, and similarity: Selected Writings, ed. [Cambridge, MA: MIT Press], 205)

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