David, a first-year college student, is currently completing his statistics assignment but he is not understanding the notes about chi-square distribution. Using your own words provide responses to...

David, a first-year college student, is currently completing his statistics assignment but he is not understanding the notes about chi-square distribution. Using your own words provide responses to the following questions to assist David with understanding said
topic.
a. What is a chi-square distribution?

b. What is the purpose of chi-square distributions?

c. Explain the following steps involved in a chi-square test of independence:

1.  Identify the claim then state the null and alternative hypotheses (Ho and Ha) for
   this test.


2. Select the level of significance.


3. Calculate the test statistic.


4. Formulate the Decision Rule and Make a Decision.


5. Interpret the regression line y = -3.3532x + 32.467