Help please!!!

1- Your final grade might be A, B, C, D, or F. So, it has five possible outcomes. a) Rewrite the outcomes of your final grade in a way to make it a Bernoulli experiment. You must define the success and failure in this experiment very well. Also, assign a number to it, which is the probability of success. b) Define another Bernoulli experiment based on the outcomes of your grade and again assign a number to the probability of success. (So, you have one probability of success in part a and another one in part b. You can assign any number to the probability of success in each part but you should make sure that if I compare those numbers between part a and part b, they make sense.) 2- You may know that the city provides free meals in NYC because of the pandemic. Suppose one of those locations that gives free meals wants to make sure they have enough meals every day but do not have many leftover meals. So, they contact you to calculate the number of meals needed for that location every day (suppose that the daily demand has the same distribution with the same parameters). How do you set up a plan to calculate the number of meals needed everyday? You should clearly explain the distribution you assume that the demand has, how you find the parameters of that distribution, and how you calculate the number of meals needed for that location. Explain all steps. 3- Consider the below normal distribution, in which the random variable of X is the speed. Calculate P(x=70). Freeway Speed Examples Normal PDF Normal CDF .09 1.00 .08- .90 - .07 .80 .06 - 70 .05 .04 .03 02 .01 00 70 00- 65 75 80 85 70 75 80 85 90 Miles per Hour Miles per Hour 4- In general, when we have a normal distribution, we change it to the standard normal distribution. What is the reason for that