On the other hand, interpretive sociology concentrates on people's understanding of their actions and their surroundings. Secondly, positivist sociology claims that objective reality exists, as whereas, interpretive sociology answers that reality is subjective, assembled by people in the course of their everyday lives.
Answer:
That well-intentioned people may perpetuate discrimination that is invisible to them
Explanation:
Fullinwider hopes to make some points with the "Land of Giants" thought experiment. He conducted an extensive research study and realized that sets of people that are well-intentioned may perpetuate discrimination that is invisible to them. Fullinwider pointed out that good people sometimes might show discriminating acts toward others
Answer: norepinephrine
Neurotransmitters are chemical messengers in the brain that are the means by which brain cells communicate with each other. New drugs like venlafaxine are called <em>serotonin-norepinephrine reuptake inhibitors</em>, and their function is to target two main neurotransmitters: serotonin and norepinephrine, which are the main neurotransmitters associated with depression.
Which one? there is more than one.
Answer:
b. Null hypothesis :
Alternative hypothesis: 
Explanation:
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
On this case the Management try to proof that due to a new production process, the life expectancy of its tires has increased. So this needs to be on the alternative hypothesis. And the complement of the alternative hypothesis would be on the null hypothesis.
Null hypothesis :
Alternative hypothesis: 
Other important thing is that on the alternative hypothesis we never can have the symbol equal.
Based on this the best option on this case is b.