Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. LOADING... Click the icon to view a t distribution table. TInterval (13.046,22.15) x=17.598 Sx=16.01712719 n=50 Question content area bottom Part 1 a. What is the number of degrees of freedom that should be used for finding the critical value tα/2? df=4949 (Type a whole number.) Part 2 b. Find the critical value tα/2 corresponding to a 95% confidence level. tα/2=2.012.01 (Round to two decimal places as needed.) Part 3 c. Give a brief general description of the number of degrees of freedom. A. 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. B. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values. C. 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. D. The number of degrees of freedom for a collection of sample data is the total number of sample values.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 25SGR

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Question content area bottom

Part 1

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

tα/2?

df=4949

(Type a whole number.)

Part 2

b. Find the critical value

tα/2

corresponding to a 95% confidence level.

tα/2=2.012.01

(Round to two decimal places as needed.)

Part 3

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 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 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 total number of sample values.

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