Asked by kish
What is a 95% confidence interval for the time my colleagues can stay awake on average for all of my colleaguesWhat is a 95% confidence interval for the time my colleagues can stay awake on average for all of my colleagues
n=10sample
mean = 2.33
not sure what to do after that
n=10sample
mean = 2.33
not sure what to do after that
Answers
Answered by
PsyDAG
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.025) and its Z score.
95% = mean ± Z(SEm)
SEm = SD/√n
Need value of SD.
95% = mean ± Z(SEm)
SEm = SD/√n
Need value of SD.
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