MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Concept explainers

Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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**Hypothesis Testing for Graduate Employment Rates** A school reports that 85% of its graduates secure jobs within one year. From a random sample of 66 graduates, 54 obtained jobs within this timeframe. We need to determine if there is enough evidence to claim that a significantly smaller percentage of graduates are employed than what the school advertises. We will use a significance level of α = 0.025. 1. **Appropriate Test for the Study:** - Use the **1-PropZTest**. 2. **Formulating Hypotheses:** - **Null Hypothesis (H₀):** \( p = 0.85 \) - **Alternative Hypothesis (H₁):** \( p < 0.85 \) 3. **Calculating the Test Statistic:** - The test statistic field requires the result to be displayed to three decimal places. 4. **Determining the p-value:** - Enter the p-value displayed to four decimal places. This setup guides through testing whether the employment claim made by the school holds true according to the sample data using a one-proportion Z-test.
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Transcribed Image Text:**Hypothesis Testing for Graduate Employment Rates** A school reports that 85% of its graduates secure jobs within one year. From a random sample of 66 graduates, 54 obtained jobs within this timeframe. We need to determine if there is enough evidence to claim that a significantly smaller percentage of graduates are employed than what the school advertises. We will use a significance level of α = 0.025. 1. **Appropriate Test for the Study:** - Use the **1-PropZTest**. 2. **Formulating Hypotheses:** - **Null Hypothesis (H₀):** \( p = 0.85 \) - **Alternative Hypothesis (H₁):** \( p < 0.85 \) 3. **Calculating the Test Statistic:** - The test statistic field requires the result to be displayed to three decimal places. 4. **Determining the p-value:** - Enter the p-value displayed to four decimal places. This setup guides through testing whether the employment claim made by the school holds true according to the sample data using a one-proportion Z-test.
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