Find the Margin of Error $75.67 < \mu < 80.33$ B) $74.63 < \mu < 81.37$

question 2

Multiple Choice

Find the margin of error.
-Thirty randomly selected students took the calculus final. If the sample mean was 78 and the standard deviation was 7.5, construct a 99 percent confidence interval for the mean score of all students.

• A) \(75.67 < \mu < 80.33\)
• B) \(74.63 < \mu < 81.37\)
• C) \(74.23 < \mu < 81.77\)
• D) \(74.24 < \mu < 81.76\)

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