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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