Kindly answer all questions please???

This question is related to a "Research" course im taking. my research question is "How does social media impact mental health?" thats all i have regarding the research JUST the question.

The assignment question is as follows:

"Identify a DATA-MINING TECHNIQUE that could be useful for your research (stated above) AND describe it in the context lf your research. this should be between

to repeat I havent done anything besides come up with the research question, feel free to use whatever idea regarding my research question to answer the assignment question.

if you require more info please ask!

11. The role of probability in lnferential statistics How is probability used in inferential statistics? C) A researcher uses probability to decide whether to use inferential or descriptive statistics. C) A researcher uses probability to help her decide whether she believes a treatment has had an effect. C) A researcher uses probability to calculate the standard deviation of a population. 9. The role of probability in inferential statistics How is probability used in inferential statistics? O A researcher uses probability to calculate the mean value of a sample. O A researcher uses probability to help her decide whether she believes a treatment has had an effect. O A researcher uses probability to decide whether to draw a sample from a population.QUESTION 2 (2 1) Write down expression in generalized coordinates for the Lagrangian function of the following system (5) A particle that is constrained to the surface of a cylinder (2.2) Find the extremal (if it exists) of the isoperimetric problem with the functional (12) I[x] = (12 - z?) dt, subject to the conditions x dt = 4-1, r (0) =0, x =0The probability of a student passing statistics is known to be 0.47; and the probability of a student passing chemistry is known to be 0.43. If the probability of passing both is known to be 0.32, calculate: (a) the probability of failing chemistry (b) the probability of passing at least one of statistics and chemistry (c) the probability of a student passing chemistry, given that they passed statistics (d) Are passing chemistry and statistics independent? Justify (e) (harder) a group of 32 randomly selected students attend a special seminar on study skills. Of these 32, only 8 fail both. State a sensible null hypothesis, test it, and interpret