Enter Title

Chi-square independence

100

How to calculate the degrees of freedom?

df=(n-1)(c-1)

200

Calculate the degrees of freedom from the table.

https://www.researchgate.net/figure/SAMPLE-CONTINGENCY-TABLE-FOR-CA_tbl8_273118770

9

300

Calculate the p-value of the contingency table.

https://www.researchgate.net/figure/SAMPLE-CONTINGENCY-TABLE-FOR-CA_tbl8_273118770

0

400

Establish the null and alternative hypotheses of the problem

https://www.researchgate.net/figure/SAMPLE-CONTINGENCY-TABLE-FOR-CA_tbl8_273118770

H₀: The level of technical writing expertise is independent of major (subject)

H₁: The level of technical writing expertise is not independent of major (subject)

500

If the p-value in a test is 0.0201 give the conclusion for the test at 5% of significance level

The H₀ is rejected. H₁ is accepted

GOF

100

How to calculate the degrees of freedom?

df= n-1

200

Plot a chi-square graph

https://www.easysevens.com/understanding-chi-square-critical-value-a-beginners-tutorial/

300

From problem 15, write down the null and alternative hypotheses of the test

https://docs.google.com/document/d/15ay5IeayoZctQ3_9ayew5eAP6xXXJot8/edit

H₀: The running time of the movies can be modelled by N(88, 6.75²)

H₁: The running time of the movies cannot be modelled by N(88, 6.75²)

400

From problem 15, Calculate the missing expected frequencies of the distribution (a and b)

https://docs.google.com/document/d/15ay5IeayoZctQ3_9ayew5eAP6xXXJot8/edit

a= 57.6 and b=30.0

500

From problem 15, Perform and State the conclusion for the test at 5% of significance level

https://docs.google.com/document/d/15ay5IeayoZctQ3_9ayew5eAP6xXXJot8/edit

df=4, p=0.0166, H₀ is rejected