Answered: A study is done on butterflies. As…

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

A study is done on butterflies. As with most lifespans this is normally distributed. It has a mean of 10.2 and a standard deviation of 1.5. The researchers find a sample of 6 butterflies and calculate the sample mean of 10.8. They conclude that the probability of this sample mean or greater is 0.34458. Is this correct?

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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