Question: a (3 points) A random sample of 90 observations produced a mean of x = 27.3 from a population with a normal distribution and a

a (3 points) A random sample of 90 observations produced a mean of x = 27.3 from a population with a normal distribution and a standard deviation o = 4.96. (a) Find a 95% confidence interval for SHS (b) Find a 99% confidence interval for ISHS (c) Find a 90% confidence interval for SHS

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