(a) Find the margin of error for the given values of c, σ, and
n. c = 0.90, σ = 3.8, n = 100
E= _ (Round to three decimal places as needed.)
(b) Construct the confidence interval for the population mean
μ.
c = 0.90 , x=9.1, σ = 0.3 , and n = 47
A 90% confidence interval for μ is _, _ (Round to two decimal
places as needed.)
(c) Construct the confidence interval for the
population mean...