If a single letter is chosen at random from the word 'probability', what is the probability that the letter selected is $i$?

Which of the following is an example of random selection?

In the context of probability experiments, which of the following best describes an $independent$ variable?

Which of the following is a qualitative measurement in the context of probability?

If you toss a fair coin $20$ times, what is the probability that it lands on tails in a single toss?

Which of the following is a valid probability distribution?

In the context of probability and statistics, what does it mean if a statistic is resistant?

In the context of probability and statistics, what is the main difference between a $\mathrm{parameter}$ and a $\mathrm{statistic}$?

Which of the following correctly states the two requirements for a discrete probability distribution?