A test is made of $H _ { 0 } : \mu = 63 \text { versus } H _ { 1 } : \mu 63$
A sample of size n=68 is drawn, and $\bar { x } = 62$ The population standard deviation is $\sigma = 20$ Compute the value of the test statistic z .
A) -1.84
B) -0.05
C) -0.41
D) 0.34

Question

A test is made of $H _ { 0 } : \mu = 63 \text { versus } H _ { 1 } : \mu > 63$
A sample of size  n=68  is drawn, and $\bar { x } = 62$ The population standard deviation is $\sigma = 20$ Compute the value of the test statistic  z .
A)  -1.84 
B)  -0.05 
C)  -0.41 
D)  0.34

Quizplus · Accepted Answer

The test statistic z is calculated using the formula $ z = \frac{\bar{x} - \mu}{\sigma/\sqrt{n}} $. Substituting the given values: $ z = \frac{62 - 63}{20/\sqrt{68}} \approx -0.41 $.

A Test Is Made Of H0:μ=63 versus H1:μ>63H _ { 0 } : \mu = 63 \text { versus } H _ { 1 } : \mu > 63H0​:μ=63 versus H1​:μ>63

A Test Is Made Of $H _ { 0 } : \mu = 63 \text { versus } H _ { 1 } : \mu > 63$