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hey guys I really need this right now if my grade average is a 75 and I make a 36 on my 9 weeks test what my average be?
1 answer:
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Solution :
Here the probability that exactly 28 out of 304 students will not graduate on time. That is
P (x = 28)
By using the normal approximation of binomial probability,
∴
That is the area between 27.5 and 28.5
Therefore, the correct option is (e). Area between 27.5 and 28.5