The following are the four Important Properties of a Test of Hypothesis. Kindly explain each further for better understanding.  The type I error and type II errors are related. A decrease in the probability of one generally results in an increase in the probability of the other.  The size of the critical region, and therefore the probability of committing a type I error, can always be reduced by adjusting the critical value(s).  An increase in the sample size n will reduce α and β simultaneously.

MATLAB: An Introduction with Applications
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The following are the four Important Properties of a Test of Hypothesis. Kindly explain each further for better understanding. 

  1. The type I error and type II errors are related. A decrease in the probability of one generally results in an increase in the probability of the other.
  2.  The size of the critical region, and therefore the probability of committing a type I error, can always be reduced by adjusting the critical value(s).
  3.  An increase in the sample size n will reduce α and β simultaneously.
  4.  If the null hypothesis is false, β is a maximum when the true value of a 3parameter approaches the hypothesized value. The greater the distance between the true value and the hypothesized value, the smaller β will be.
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  • If the null hypothesis is false, β is a maximum when the true value of a parameter approaches the hypothesized value. The greater the distance between the true value and the hypothesized value, the smaller β will be.
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