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At State University, \(30 \%\) of the students are majoring in humanities, \(50 \%\) in history and culture, and \(20 \%\) in science. Moreover, according to figures released by the registrar, the percentages of women majoring in humanities, history and culture, and science are \(75 \%, 45 \%\), and \(30 \%\), respectively. Suppose Justin meets Anna at a fraternity party. What is the probability that Anna is a history and culture major?

Short Answer

Expert verified
The probability that Anna is a history and culture major is 0.50 or 50%.

Step by step solution

01

Analyze the Given Information

From the information given in the exercise, we learn that 50% of students major in history and culture, regardless of their gender. Given Justin meets Anna at a fraternity party, the major chosen by Anna does not depend on the place they meet or their gender rather it depends solely on the proportion of students in each major.
02

Apply the Appropriate Formula for Probability

The probability of an event is the ratio of the number of ways the event can occur to the total number of outcomes. In this case, the events are the students choosing different majors. The probability (P) is calculated by dividing the number of students majoring in history and culture by the total number of students. But since the total number of students is not given directly, we take it as 100% and calculate accordingly. Therefore, the probability (P) of a randomly met student (like Anna) majoring in history and culture is 0.50 or 50%.

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Key Concepts

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

Major Distribution Among Students
Understanding the major distribution among students at a university can provide key insights into the academic preferences and trends within the student body. Major distribution refers to the percentage of students enrolled in each academic discipline offered by the institution. For example, at State University, the distribution of students across three broad fields is as follows: humanities (30%), history and culture (50%), and science (20%).

This distribution can be influenced by various factors such as the labor market demand, the reputation of the departments, and the interests of incoming students. It is also important to note how this distribution can impact individual students' academic experiences, as a major with fewer students may offer a more personalized and intimate classroom setting, whereas majors with more students might provide more networking opportunities.

Statistics on major distribution are crucial for university administration for resource allocation, and they can help prospective students make informed decisions regarding their field of study. When evaluating the probability of meeting a student from a specific major, such as history and culture, one must only consider the ratio of that major to the whole without accounting for other external factors.
Gender Distribution in Majors
The gender distribution in majors examines the percentage of each gender within various academic disciplines. State University's provided data indicates significant differences in gender preference across different fields: humanities (75% women), history and culture (45% women), and science (30% women).

These statistics offer essential insights into gender dynamics and potential disparities within academic environments. They might reflect societal influences, accessibility, perceived career prospects, and perhaps the need for initiatives aimed at encouraging a more balanced gender representation in certain fields, especially those where a gender is drastically underrepresented.

When considering gender distribution in majors, it is essential to realize that this breakdown does not affect the probability of a single event like meeting a woman who majors in history and culture in a social setting, as the likelihood is not specific to gender in this context. However, this information is vital when discussing diversity, inclusivity, and equal opportunity within educational settings.
Probability Formula Application
Applying the probability formula is a fundamental concept in statistics used to determine the likelihood of a particular outcome. The probability is the ratio of the number of favorable outcomes to the total number of possible outcomes. In mathematical terms, the probability (P) of an event E can be expressed as:
\[ P(E) = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \]
Applying this formula to the context of meeting a student from State University, assuming we are only interested in their academic major and have no other influencing factors, makes for a straightforward calculation.

In this case, the number of favorable outcomes would be the number of students studying history and culture, and the total number of outcomes is the complete student population. Since the likelihood of meeting a student from a given major is proportional to the size of that major's student body, the calculation becomes significantly simple as we consider only the given major distribution percentage for history and culture, which is 50%.

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Most popular questions from this chapter

Building permits were issued last year to three contractors starting up a new subdivision: Tara Construction built two houses; Westview, three houses; and Hearthstone, six houses. Tara's houses have a \(60 \%\) probability of developing leaky basements; homes built by Westview and Hearthstone have that same problem \(50 \%\) of the time and \(40 \%\) of the time, respectively. Yesterday, the Better Business Bureau received a complaint from one of the new homeowners that his basement is leaking. Who is most likely to have been the contractor?

Urn I contains three red chips and one white chip. Urn II contains two red chips and two white chips. One chip is drawn from each urn and transferred to the other urn. Then a chip is drawn from the first urn. What is the probability that the chip ultimately drawn from urn I is red?

Your favorite college football team has had a good season so far but they need to win at least two of their last four games to qualify for a New Year's Day bowl bid. Oddsmakers estimate the team's probabilities of winning each of their last four games to be \(0.60,0.50,0.40\), and \(0.70\), respectively. (a) What are the chances that you will get to watch your team play on Jan. 1 ? (b) Is the probability that your team wins all four games given that they have won at least three games equal to the probability that they win the fourth game? Explain. (c) Is the probability that your team wins all four games given that they won the first three games equal to the probability that they win the fourth game?

Spike is not a terribly bright student. His chances of passing chemistry are \(0.35\); mathematics, \(0.40\); and both, \(0.12\). Are the events "Spike passes chemistry" and "Spike passes mathematics" independent? What is the probability that he fails both subjects?

According to an advertising study, \(15 \%\) of television viewers who have seen a certain automobile commercial can correctly identify the actor who does the voiceover. Suppose that ten such people are watching TV and the commercial comes on. What is the probability that at least one of them will be able to name the actor? What is the probability that exactly one will be able to name the actor?

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