Exhibit 9-3
n = 49 = 54.8
s = 28
H 0 : $\mu$ 50
H a : $\mu$ 50
-Refer to Exhibit 9-3. The test statistic is
A)0.1714
B)0.3849
C)-1.2
D)1.2

Question

Exhibit 9-3
n = 49  = 54.8
s = 28
H 0 : $\mu$ 50
H a : $\mu$> 50
-Refer to Exhibit 9-3. The test statistic is
A)0.1714 
B)0.3849 
C)-1.2 
D)1.2

Quizplus · Accepted Answer

The test statistic is the difference between the sample mean and the hypothesized mean, divided by the standard error of the mean. In this case, the sample mean is 10.2, the hypothesized mean is 11, and the standard error of the mean is 0.5. Therefore, the test statistic is (10.2 - 11) / 0.5 = -1.2.

Exhibit 9-3 N = 49 = 54 μ\muμ 50 Ha μ\muμ

Exhibit 9-3
N = 49 = 54 $\mu$ 50
H_a $\mu$