1 3 construct a 94 confidence interval for the population mean u assume the population has a nor

First, we will find the z-score for the given confidence levels. For a 94% confidence interval,

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1. Construct a 94% confidence interval for the population mean, μ. Assume the population has a normal distribution. A sample of 40 part-time workers had mean annual earnings of $3120 with a standard deviation of $677. Round to the nearest dollar. (Round to 2 decimals) B) Construct a 93% confidence interval for the population mean, μ. Assume the population has a normal distribution. A group of 36 randomly selected employees has a mean age of 25.4 years with a standard deviation of 3.8 years. Round to the nearest tenth. (Round to 3 decimals)

          1. Construct a 94% confidence interval for the population mean, μ. Assume the population has a normal distribution. A sample of 40 part-time workers had mean annual earnings of $3120 with a standard deviation of $677. Round to the nearest dollar. (Round to 2 decimals)

B) Construct a 93% confidence interval for the population mean, μ. Assume the population has a normal distribution. A group of 36 randomly selected employees has a mean age of 25.4 years with a standard deviation of 3.8 years. Round to the nearest tenth. (Round to 3 decimals)

Added by Carlos A.

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