Answer:
Null hypothesis:

Alternative hypothesis:

The statistic is given by:

And replacing we got:

And the best option would be:
2.19
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