Howtosignalprocessing
- How do you find the confidence interval for the mean?
- How would you find the 95% confidence intervals for a given mean?
How do you find the confidence interval for the mean?
To obtain this confidence interval, add and subtract the margin of error from the sample mean. This result is the upper limit and the lower limit of the confidence interval.
How would you find the 95% confidence intervals for a given mean?
To obtain 95% confidence intervals for a normal distribution with known variance, you take the mean and add/subtract \displaystyle 1.96\times standard\ error. This is because 95% of the values drawn from a normally distributed sampling distribution lie within 1.96 standard errors from the sample mean.
