We can form a confidence interval for the population total T by finding a confidence interval for the population mean 
in the usual way,and then multiplying the lower and upper limits the confidence interval by the population size N.
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Q6: The 95% confidence interval for the population
Q7: If a random sample of size 250
Q8: When samples of size n are drawn
Q9: If a sample has 20 observations and
Q10: The lower limit of the 95% confidence
Q12: The degrees of freedom for the t
Q13: The standard error of the sampling distribution
Q14: A confidence interval is an interval that,with
Q15: The mean of the sampling distribution of
Q16: The upper limit of the 90% confidence
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