Let's evaluate the ratio test:

The limit as
of this quantity is 3, which is more than 1. So, the series diverges.
It decreases hope this helps!
Answer: 

Step-by-step explanation:
Let
be the average number of hours a person drive without adding the product.
Given claim : An infomercial claims that a woman drove 33 hours without oil.
i.e. 
It is known that the null hypothesis always contains equal sign and alternative hypothesis is just opposite of the null hypothesis.
Thus the null and alternative hypothesis for the given situation will be :-


To reduce fraction we have to divide numerator and denominator by the same number. We can repeat operation few times.
Lets do this

- its the most reduced form. We cant divide 7 and 20 by the same number to not obtain number with coma. (because 7 is prime number so can be divided only by 1 and by 7)