Answered: Step 1 of 3 : State the null and…

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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It has been long accepted in the wildlife community that Golden eagles have an average wingspan of 6.7⁢ft with a standard deviation of 0.7⁢ft. However, some researchers have come to believe that due to variations in weather and habitat the standard deviation of the wingspan of Golden eagles has increased. The wingspans of a random sample of 15 Golden eagles were collected and reported in the table below. Perform a hypothesis test to determine whether the data suggests that the standard deviation of the wingspan of Golden eagles has increased. Assume the data are normally distributed and use a significance level of 0.10.
Wingspan of Golden Eagles (in ft.)

8.1	6.2	5.8	5.8	7.5
8.0	8.1	7.7	6.1	7.6
6.9	5.7	6.5	7.5	6.4

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Step 1 of 3 :

State the null and alternative hypotheses for the test. Fill in the blank below.

Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.

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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