Question: Could you help me solve and understand this question? A teacher says that historically the _distribution of final exam grades in the course resemble a

Could you help me solve and understand this question?

A teacher says that historically the _distribution of final exam grades in the course resemble a normal distribution with a mean final exam mark of u= 60 % and standard deviation of 0 = 12% a what is the probability that a random chosen final exam mark in the course will be at least 71%% In order to pass the course a student must have a final exam mark of 50%% what proportion of students will not pass pass the final exam? C) The top 5%% of students writing the final exam will recleve a letter grade of at least an A in the course , To two decimal places, find the minimum final exam mark needed on the final to earn a letter grade of at least " A" in the course . D suppose this professor randomly picked 20 final exams, observing the earned mark for each. what is the probability that 5 of these have a final exam grade of less than 60

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