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A one tailed test is when you are testing specifically for an increase or decrease- eg whether the probability of a person buying a product has INCREASED after a marketing change

A two tailed test ...

Firstly you would have to differentiate the equation to find the expression that describes the rate of change of the parameters relative to each other using the standard differentiation method. This invol...

In order to solve this question we simply must substitute x=1 into f(x). But what is f(x)? What does it actually mean to make a subsitution? f(x) has a fancy name attached to it called a funct...