Express 8:28 in its simplest form
1 answer:
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Answer: 0.9738
Step-by-step explanation:
We assume that the scores follows a normal distribution.
Let denotes the class average .
As per given we have,
Sample size : n= 12
The probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam will be :
Hence, the correct answer = 0.9738