Statistics, measures of central tendency, t-test, null hypothesis

Review the Crash Course YouTube.
In your own words (approximately 750-1500 words), respond to the following topics or questions. You may find it helpful to review other internet sources on this topic also. Provide your reference(s) in APA format.

What are statistics and describe the value of them and the danger of them?
Describe the difference between the mean, median and mode.
What is the t-test and when is it used?
Explain what the null hypothesis is and how you would determine if it is true in an experiment.

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