A sample of size n = 51 is drawn from a population whose standard deviation is o = 47. Part 1 of 2 (a) Find the margin of error for a 90% confidence interval for μ. Round the answer to at least three decimal pla The margin of error for a 90% confidence interval for u is Part 2 of 2 X (b) If the sample size were n= 72, would the margin of error be larger or smaller? (Choose one) ▼ because the sample size is (Choose one) ▼ X

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