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Based on a Sample of 30 Randomly Selected Years, a 90

Question 11

Multiple Choice

Based on a sample of 30 randomly selected years, a 90% confidence interval for the meanannual precipitation in one city is from 48.7 inches to 51.3 inches.Find the margin of error.


A) 0.39 inches
B) 0.10 inches
C) 2.6 inches
D) 1.3 inches
E) There is not enough information to find the margin of error.

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