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.
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
1 answer
1 answer