### Analysis of Physical Activity Among Children Aged 5-12**Context:** With the rise in childhood obesity, the Pediatrics Association has expressed concerns about the daily physical activity levels of children. Regular physical activity is essential as it helps in maintaining a healthy heart rate and overall fitness.**Previous Study:**In 2012, the Pediatrics Association conducted a study revealing that only 48% of children aged five to twelve were engaging in physical activities for at least one hour daily. Here, "physically active" is defined as participating in activities that elevate the child's heart rate to the aerobic zone.**Recent Survey:**To understand the current trends, a recent random sample survey of 250 children aged five to twelve was carried out. The findings showed that 59% of the sampled children reported being physically active for at least one hour per day.**Objective:**The objective is to determine whether there has been a statistically significant change in the proportion of children aged five to twelve who are physically active for at least one hour a day, using a 1% significance level.**Key Terms:**- **Physically Active:** Activities increasing the child's heart rate to the aerobic zone for at least one hour daily.- **1% Significance Level:** A stringent threshold used in hypothesis testing to determine the statistical significance of the results.**Conclusion:**The results suggest a potential change in the physical activity levels among children. Further statistical analysis will determine the significance of this change.---*Note: Graphs or diagrams were not provided in the source text. If graphical data were available, a comparative bar chart showing the proportions from 2012 and the recent survey would likely be included for better visualization of the changes in physical activity levels over time.*

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With the increase in childhood obesity, the Pediatrics Association is concerned about the amount of physical activity children obtain daily. In 2012 the Pediatrics Association found that only 48% of children between the ages of five and twelve were physically active for at least one hour a day, where physically active refers to any activity that increases the child's heart rate to the aerobic zone. A random sample of 250 children between the ages of five and twelve was obtained. Of those sampled, 59% said they were physically active for at least one hour a day. At the 1% significance level, can the Pediatrics Association conclude that the proportion of children between the ages of five and twelve that are physically active for at least one hour a day has changed.

With the increase in childhood obesity, the Pediatrics Association is concerned about the amount of physical activity children obtain daily. In 2012 the Pediatrics Association found that only 48% of children between the ages of five and twelve were physically active for at least one hour a day, where physically active refers to any activity that increases the child's heart rate to the aerobic zone. A random sample of 250 children between the ages of five and twelve was obtained. Of those sampled, 59% said they were physically active for at least one hour a day. At the 1% significance level, can the Pediatrics Association conclude that the proportion of children between the ages of five and twelve that are physically active for at least one hour a day has changed.

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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