A simple random sample of size 12 has mean x = 3.37. The population standard deviation is
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A simple random sample of size 12 has mean x̄ = 3.37. The population standard deviation is σ = 1.62. The population is approximately normally distributed. Construct a 95%
confidence interval for the population mean.
In Exercises 5–12, state which type of parameter is to be estimated, then construct the confidence interval.
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