Answered: Refer to the accompanying data display…

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

Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. .	TInterval
(13.046,22.15) x=17.598 Sx=16.01712719 n=50

a. What is the number of degrees of freedom that should be used for finding the critical value

tα/2?

df=__

(Type a whole number.)

b. Find the critical value tα/2corresponding to a 95% confidence level.

tα/2=

(Round to two decimal places as needed.)

c. Give a brief general description of the number of degrees of freedom.

The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values.

The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values.

The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values.

The number of degrees of freedom for a collection of sample data is the total number of sample values.

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