Top answers

How does a hypothesis test work?

A hypothesis test can be thought of as being somewhat similar to a court case. In a court case, we want to find out whether someone is either guilty, or not guilty, so we assume that they are not guilty, and...
DA
Answered by Denis A. • Maths tutor
4218 Views

Examine the reasons for the Nationalist victory in the Spanish Civil War.

Many different factors contributed to the Nationalists' triumph over the Republicans in the Spanish Civil War, and the question is asking you to explore the impact and significance of these factors on the ul...
VF
Answered by Viola F. • History tutor
6217 Views

How do I know when to use the imperfect tense?

The imperfect tense is the tense we use when we talk about an ongoing action in the past. It is therefore what we use when we talk about what we used to do when we were younger (we did it more than once, it ...
CH
Answered by Catherine H. • French tutor
2750 Views

Why do earthquakes happen at destructive plate margins?

At destructive plate margins, oceanic crust subducts beneath continental crust. In this zone of subduction a lot of friction is created as the plates move alongside each other. Over time, the build up of fri...
AM
Answered by Aimee M. • Geography tutor
40106 Views

Why is an action potential an all or nothing process?

An action potential is the signal neurons use to communicate with each other. It is caused by the rapid opening of sodium channels and influx of sodium ions. Because at rest the inside of the neuron is negat...
GG
Answered by Gemma G. • Biology tutor
9749 Views