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(1 point) A random sample of 100 observations produced a mean of E = 22.5 from a population with a normal distribution and a standard

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(1 point) A random sample of 100 observations produced a mean of E = 22.5 from a population with a normal distribution and a standard deviation 0' = 4.53. (a) Find a 99% confidence interval for [1 555 S M S (b) Find a 95% confidence interval for ,u 555 S M S (c) Find a 90% confidence interval for 1\" === ( u <

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