Answered: An NHANES report gives data for 657 men…

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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Question

An NHANES report gives data for 657 men aged 20-29 years. The BMI of these 657 men was ?⎯⎯⎯= 26. On the basis of this sample, we want to estimate the BMI ? in the population of all 23.2 million American men in this age group. Treat these data as an SRS from a Normally distributed population with standard deviation ?=7.9. Source adapted from: Adapted from Fryar C. D., et al., Anthropometric reference data for children and adults: United States, 2011–2014. National Center for Health Statistics. Vital Health Statistics 3(2016),Find the margins of error for 90% confidence based on SRSs of 352 young men and 1615 young men. Give your answers to four decimal places. margin of error when ?=352: margin of error when ?=1615:

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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