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Suppose 250 people have applied for 15 job openings at a chain of restaurants. a. What fraction of the applicants will get a job? b. What fraction of the applicants will not get a job? c. Assuming all applicants are equally qualified and have the same chance of being hired, what is the probability that a randomly selected applicant will get a job?

Short Answer

Expert verified
a. \( \frac{3}{50} \); b. \( \frac{47}{50} \); c. \( \frac{3}{50} \).

Step by step solution

01

Understanding the Problem

We have 250 people applying for 15 job openings. We need to find out fractions and probabilities related to this scenario.
02

Finding the Fraction of Applicants Getting a Job

To find the fraction of applicants who will get a job, divide the number of job openings by the total number of applicants. Thus, the fraction is \( \frac{15}{250} \).
03

Simplifying the Fraction

Simplify the fraction \( \frac{15}{250} \) by finding the greatest common divisor (GCD) of 15 and 250, which is 5. Divide both numerator and denominator by 5 to obtain \( \frac{3}{50} \).
04

Finding the Fraction of Applicants Not Getting a Job

To find the fraction of applicants who will not get a job, subtract the fraction of applicants getting a job from 1: \( 1 - \frac{3}{50} = \frac{47}{50} \).
05

Understanding Random Probability

As each applicant has an equal chance, the probability that a randomly selected applicant will get a job is the same as the fraction of applicants who will get a job. Thus, the probability is \( \frac{3}{50} \).

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Key Concepts

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

Fractions
A fraction is a way to represent a part of a whole. It consists of two numbers: a numerator and a denominator. The numerator sits above the line and represents the part we have, while the denominator below the line tells us into how many parts the whole is divided.

In the context of job applications, fractions can help in understanding how many applicants land a job out of the entire pool. For example, if there are 15 job positions and 250 people apply, the fraction of applicants that get a job is represented as \( \frac{15}{250} \). This fraction shows the relationship between the parts (jobs available) and the whole (total applicants).
  • **Numerator:** Number of jobs available (15)
  • **Denominator:** Total number of applicants (250)
Fractions provide a simple and clear way to express proportions and are essential in calculating probabilities.
Job Application
When considering job applications, probability and fractions can offer insights into chances of employment in competitive scenarios. In our example, we have 250 applicants competing for 15 job openings. This scenario can be quite common in many industries where demand for jobs exceeds supply.
  • **Total Applicants:** 250 - indicates the total number of individuals who desire the job.
  • **Available Positions:** 15 - reflects the opportunities available for potential employment.
By understanding the basic fractions that arise from these numbers, applicants can assess their chances of being hired. If everyone were equally qualified, the probability of any one applicant getting a job can be equated to the fraction of available positions to total applicants.
  • **Fraction for Getting a Job:** \( \frac{3}{50} \) - signifies the chance of an applicant being selected for a job.
  • **Fraction for Not Getting a Job:** \( \frac{47}{50} \) - shows how likely it is that an applicant may not secure a position.
Understanding these fractions and their implications can be significant aids for applicants as they navigate the job market.
Simplifying Fractions
Simplifying fractions is about making them easier to understand or use, without changing their value. You do this by dividing the numerator and the denominator by their greatest common divisor (GCD). In the job application example, we initially had the fraction \( \frac{15}{250} \) for the number of applicants getting a job.

To simplify:\( \frac{15}{250} \)
  • Find the GCD of 15 and 250, which is 5.
  • Divide both the numerator and denominator by 5 to simplify the fraction.
  • The simplified fraction is \( \frac{3}{50} \).
Simplifying helps us see the fraction in its simplest form, making calculations and understanding easier. It’s handy for quickly communicating probabilities and proportions, such as the probability of any single applicant getting a job being \( \frac{3}{50} \). Simplifying doesn't alter the essence of the fraction, just makes it more manageable and intuitive.

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