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

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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TInterval
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below.
E Click the icon to view at distribution table.
(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 t2?
df = 49
(Type a whole number.)
b. Find the critical value t,12 corresponding to a 95% confidence level.
ta/2=0
(Round to two decimal places as needed.)

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