Two samples are randomly selected from each population. The sample statistics are given below. n1 = 150 n2 = 275
x1 = 72.86 -x2 = 67.34
s1 = 15.98 s2 = 35.67
The value of the standardized test statistic to test the claim that μ1 > μ2 is .
-2.19
2.19
3.15
-3.15

Null hypothesis:

Alternative hypothesis:

The statistic is given by:

And replacing we got:

And the best option would be:

2.19

Step-by-step explanation:

We have the following info given:

n1 = 150 n2 = 275

s1 = 15.98 s2 = 35.67

We want to test the following hypothesis:

Null hypothesis:

Alternative hypothesis:

The statistic is given by:

And replacing we got:

And the best option would be:

2.19