• Write down the test used for each hypothesis and the justification of using each test.
• Write down the mean values and SDs for each variable (if applicable)
• Interpret the results of each statistical test you are going to use.

1. H₀: There is no difference in gingival inflammation between all groups.
2. H₀: There is no correlation between plaque accumulation and gingival inflammation.
3. H₀: There is no difference in the class of carious lesions between the three groups.
4. H₀: There is no difference in the class of carious lesions between males and females.
5. gingival inflammation
6. H₀: There is no difference in salivary flow rate between males and females.
7. H₀: There is no difference in salivary flow rate between the three groups.
8. H₀: There is no difference in gingival inflammation between the three groups.