### Analysis of Quiz Completion TimesStudents in a statistics class answered a quiz question and the time it took each to complete it was recorded. The results are summarized in the following frequency distribution:| **Length of Time (in minutes)** | **Number** ||---------------------------------|------------|| 0 up to 2 | 3 || 2 up to 4 | 6 || 4 up to 6 | 20 || 6 up to 10 | 8 |**Question:** What is the mean (in minutes)?To calculate the mean, we need to find the midpoint for each class interval, multiply by the frequency for that interval, sum these products, and then divide by the total number of observations.Steps to calculate the mean:1. Determine the midpoint (xᵢ) for each interval.2. Multiply each midpoint by the corresponding frequency (fᵢ).Let's calculate step-by-step:1. Midpoints: - For 0 up to 2: \((0 + 2) / 2 = 1\) - For 2 up to 4: \((2 + 4) / 2 = 3\) - For 4 up to 6: \((4 + 6) / 2 = 5\) - For 6 up to 10: \((6 + 10) / 2 = 8\)2. Frequency times Midpoint: - \(1 \times 3 = 3\) - \(3 \times 6 = 18\) - \(5 \times 20 = 100\) - \(8 \times 8 = 64\)3. Sum of these products: \[3 + 18 + 100 + 64 = 185\]4. Total number of observations: \[3 + 6 + 20 + 8 = 37\]5. Calculating the mean: \[ \text{Mean} = \frac{\sum (fᵢ \times xᵢ)}{\sum fᵢ} = \frac{185}{37} \approx 5 \text{ minutes} \]Thus, the mean time taken to complete the quiz is approximately **5 minutes**.

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Students in a statistics class answered a quiz question and the time it took each to complete it was recorded. The results are summarized in the following frequency distribution. Length of Time (in minutes) Number 0 up to 2 3 2 up to 4 4 up to 6 20 6 up to 10 8. What is the mean (in minutes)?

Students in a statistics class answered a quiz question and the time it took each to complete it was recorded. The results are summarized in the following frequency distribution. Length of Time (in minutes) Number 0 up to 2 3 2 up to 4 4 up to 6 20 6 up to 10 8. What is the mean (in minutes)?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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