you wish to find a 95% confidence interval for the mean number of times viewers change channels with a remote control during a commerical. Based of a prelimiary study you estimate 0 = 15 how many commericals worth of data do you need to have a margin of error no more than 3
Added by Brian M.
Step 1
- Confidence level = 95% - Estimated population standard deviation, \(\sigma = 15\) - Desired margin of error, \(E = 3\) - Find the required sample size, \(n\). Show more…
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