Answered: The world's smallest mammal is the…

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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The world's smallest mammal is the bumblebee bat, also known as the Kitti's hog-nosed bat (or Craseonycteris thonglongyai as it is affectionately called). Such bats are roughly the size of a large bumblebee. Listed below are weights (in grams) from a sample of these bats. Construct a 95% confidence interval estimate of the standard deviation of weights for all such bats. Assume that the sample is a simple random sample obtained from a population with a normal distribution.

1.71.7

1.51.5

1.61.6

2.12.1

2.32.3

1.51.5

1.71.7

1.81.8

1.61.6

1.81.8

2.22.2

1.31.3

1.71.7

1.51.5

1.71.7

The 95% confidence interval estimate is

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gless than<sigmaσless than<nothing

(Round to two decimal places as needed.)

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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