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.

1. What is a chi-square distribution?

A Chi-Square/ distribution is a continuous probability distribution used in statistical inference. This distribution has one parameter which is known as the degrees of freedom/ df. The curve of the Chi-square distribution is non- symmetrical and skewed to the right. The shape of the curve is dependent on the degrees of freedom.

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

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


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


3. Select the level of significance


4. Calculate the test statistic


5. Formulate the decision rule and make a decision


6. Interpret decision in terms of the claim