How do you find the Confidence Interval for a particular Confidence Level, such as 95%, for a sample of more than 30 people? Show the exact formulas that you use in this situation to calculate the sample standard deviation and standard error?© BrainMass Inc. brainmass.com June 3, 2020, 9:30 pm ad1c9bdddf
If the sample size is greater than 30, then we use the normal distribution. A typical problem will have the following
Given: (a) Mean of the sample, M (Say 20) (b) Standard Deviation of the sample, s (Say 1.3) (c) Sample size, n (Say 49)
Step-by-step solution assists with finding the confidence interval.