Mathematics, 14.10.2019 06:30 jdmXdude3140
Asociologist develops a test to measure attitudes towards public transportation and 27 randomly selected subjects are given the test. their mean score is 76.2 and their standard deviation is 21.4. construct the 95% confidence interval for the mean score of all such subjects
Answers: 3
∈ 
then we use the statistic 
with 
degrees of freedom
is the average score of the sample
is the standard deviation of the sample
is the sample size
for a confidence level of 95% and 26 degrees of freedom
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