Q1. What statistical test should I use for the following.

For example: Are people more willing to ask others if they are double vaccinated for COVID compared to their willingness to ask others how much they earn?

It is not rude to ask someone they are double vaccinated: 1=Strongly Agree, 2= Agree, 3= Strongly disagree, 4= Disagree.

It is okay to ask someone how much they earn: 1=Strongly Agree, 2= Agree, 3= Strongly disagree, 4= Disagree.

They are both Ordinal variables.

Q2. What statistical test should I use for the following.

For example: Test the hypothesis that there is no significant difference in systolic blood pressure before and after running the marathon.

The systolic blood pressures are mathematical values.

Q3. What statistical test should I use for the following.

For example: Is there a relationship between Age groups and Marathon Completion time?

Age groups are classified as: 44 or less, 45-49, 50-54, 55-59, 60-64, 65+.

Marathon Completion time has mathematical values, ratio variable.

Q4. What statistical test should I use for the following.

For example: Select those who have a score of 49 or less on statistics anxiety rating scale and test the hypothesis that they represent a population where people spend 9 hours on average per week doing fitness training.

They are both ratio variables have a mathematical value.

Q5. What statistical test should I use for the following.

For example: Test the hypothesis that there is no significant difference in Resting energy expenditure among different age groups.

Resting energy expenditure are in calories/day .

Age groups are classified as: 44 or less, 45-49, 50-54, 55-59, 60-64, 65+.

Q6. What statistical test should I use for the following.

For example: Test the hypothesis that there is no significant between Rh positives and Rh negatives in terms of knowing when to retain and reject null.

I know when to reject and retain null: Always, Most of the times, Sometimes, Rarely, Never.

Blood groups: A+ , B+ , O+ , AB+ , A- , B- , O- , AB-

Q7. What statistical test should I use for the following.

For example: Is there a significant difference in knowing when to retain and reject null between the users of different social media platforms.

I know when to reject and retain null: Always, Most of the times, Sometimes, Rarely, Never.

Social Media Platforms: Facebook, Twitter, WhatsApp, Instagram.