Question: The standard deviation for a population is o = 15.1. A sample of 19 observations selected from this population gave a mean equal to 143.55.

The standard deviation for a population is o = 15.1. A sample of 19 observations selected from this population gave a mean equal to 143.55. The population is known to have a normal distribution. Round your answers to two decimal places. a. Make a 99% confidence interval for u. i b. Construct a 97% confidence interval for u. i c. Determine a 95% confidence interval for u
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