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P-value and its' relationship to Z-test and T-test

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What is the P-value and what is its' relationship to the Z-test and the T-test?

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Explanations of P-value and its' relationship to Z-test and T-test are provided.

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In statistical hypothesis testing, the p-value is the probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.
The lower the p-value, the less likely the result is if the null hypothesis is true, and consequently the more "significant" the result is, in the sense of statistical significance. One often accepts the alternative hypothesis, (i.e. rejects a null hypothesis) if the p-value is less ...

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