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.
I believe the answer is: to act as a ceremonial role within the senate.
Pro tempore refers to the authority given to certain individuals in case the original holder of the authority is unable to present. Pro Tempore's relationship to the head of the senate is very similar with vice president's relationship with the president.
They felt really unrespected and uncomfortable and they were always sad
The correct answer is C. By finding the monetary value of something the person would willingly trade in exchange for the good or service
Another concept of value is perceived value, defined as the perception of the customer with the benefit of a product, service or organization, being a relevant issue between their relationship, influencing the price and service statistics in which they are reimbursed to customers. customers .