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A Confidence Interval For $\left( \mu _ { 1 } - \mu _ { 2 } \right)$

Question 56

Multiple Choice

A confidence interval for $\left( \mu _ { 1 } - \mu _ { 2 } \right)$ is $( 5,8 )$ . Which of the following inferences is correct?

A) no significant difference between means
B) $\mu _ { 1 } = \mu _ { 2 }$
C) $\mu _ { 1 } > \mu _ { 2 }$
D) $\mu _ { 1 } < \mu _ { 2 }$

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