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Elden [556K]
3 years ago
15

Scores on the mathematics part of the SAT exam in a recent year were roughly Normal with mean 455 and standard deviation 120. Yo

u choose an SRS of 100 students and average their SAT math scores. If you do this many times, with a sample of size 100 each time, the standard deviation of the average scores will get close to:A. 120 B. 1.2 C. 12 D. None of the above.
Mathematics
1 answer:
laila [671]3 years ago
7 0

Answer:

its a

Step-by-step explanation:

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We have that
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so
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