1/6 < 1/4 so 1/6 would equal 2/12 and 1/4 would equal 3/12 so which means if you take one from each it would be 5/12 but if you took 2 from the first one it would only be 2/12 which is why you need to read correctly because THE REASON MARK IS CORRECT IS BECAUSE 5/12 IS GREATER THAN 2/12
I wish I could say it to you but I don't know how to plan it
This can be solved algebraically. Before we start, as context, to find a percentage you multiply by the percentage/100.

This tells us that 90 is
120% of 75. However, your question wants us to find the <em>increase</em>, therefore we don't need that 100.
Therefore, the increase is
20%.
The rejection region is give by

where the test statistics is given by

i.e.

Thus,

Using the statistical table, the level of the test is 0.04.
Answer:
Step-by-step explanation:
Given;

a)
substitute 
b)
Apply partial fraction in (a), we get;

where C is an arbitrary constant