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Name: Sally spent a lot of time during COVID-19 recording the age of every p
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Description: Sally spent a lot of time during COVID-19 recording the age of every professional wrestler. The data indicate a skewed left distribution with a mean age of 33 years and a standard deviation of 17 years. Suppose that 39 professional wrestlers are rand

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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Sally spent a lot of time during COVID-19 recording the age of every professional wrestler. The data indicate a skewed left distribution with a mean age of 33 years and a standard deviation of 17 years. Suppose that 39 professional wrestlers are randomly sampled and the average age is computed. Which of the following describes the sampling distribution of the sample mean? Select the single best answer choice.

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normally distributed with a mean of 33 and a standard deviation of 2.7

normally distributed with a mean of 33 and a standard deviation of 17

skewed to the left with a mean of 39 and a standard deviation of 2.7

skewed to the left with a mean of 33 and a standard deviation of 17

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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