A Test Is Made Of $H _ { 0 } : \mu = 55$

question 116

Multiple Choice

A test is made of $H _ { 0 } : \mu = 55$ versus $H _ { 1 } : \mu > 55 .$ A sample of size $n = 68$ is drawn, and $\bar { x } = 56$ . The population standard deviation is $\sigma = 27$ . Compute the value of the test statistic $z$ .

• A) 1.59
• B) 0.04
• C) 0.62
• D) 0.31

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