Find the specified t-value. 11) For at-curve with df = 15, find to.025 · 11) A) 2.131 B) 2.145 C) 2.120 D) 1.960

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section11.2: Box-and-whisker Plots
Problem 6E
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a 95% confidence interval for the mean score, u, of all students taking the test.
C) 59.7 to 82.3
A) 62.3 to 79.7
B) 45 to 97
D) 56.0 to 86.0
Find the specified t-value.
11) For a t-curve with df = 15, find to 025 :
11)
A) 2.131
B) 2.145
C) 2.120
D) 1.960
Find the confidence interval specified. Assume that the population is normally distributed. Use t-test
12) A sociologist develops a test to measure attitudes about public transportation, and 27
randomly selected subjects are given the test. Their mean score is 76.2 and their standard
12)
deviation
s = 21.4. Construct the 95% confidence interval for the mean score of all such subjects.
Transcribed Image Text:a 95% confidence interval for the mean score, u, of all students taking the test. C) 59.7 to 82.3 A) 62.3 to 79.7 B) 45 to 97 D) 56.0 to 86.0 Find the specified t-value. 11) For a t-curve with df = 15, find to 025 : 11) A) 2.131 B) 2.145 C) 2.120 D) 1.960 Find the confidence interval specified. Assume that the population is normally distributed. Use t-test 12) A sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test. Their mean score is 76.2 and their standard 12) deviation s = 21.4. Construct the 95% confidence interval for the mean score of all such subjects.
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