1) Suppose the grades in a finite mathematics class are Normally distributed with a mean of 75 and a standard deviation

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answerhappygod
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1) Suppose the grades in a finite mathematics class are Normally distributed with a mean of 75 and a standard deviation

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1) Suppose the grades in a finite mathematicsclass are Normally distributed with a mean of 75 and a standarddeviation of 5.
(a) What is the probability that a randomly selected student hada grade of at least 83?
(b) What is the probability that the average grade for 5randomly selected students was at least 83?
<note> write the solution with four decimal places.x.xxxx
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