Question: B please 3) The grades in this class are normally distributed with a mean of 78% and a standard deviation of 4.3% a) Determine the

B please

3) The grades in this class are normally distributed with a mean of 78% and a standard deviation of 4.3% a) Determine the probability that a randomly selected student will have a mark below 80%% [2] Round to 4 decimal places if necessary b) Determine the probability that a randomly selected student will have a mark greater than 87%% [2] Round to 4 decimal places if necessary

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