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choli [55]
4 years ago
6

The average score on a standardized test is 750 points with a standard deviation of 50 points. If 2,000 students take the test a

t a local school, how many students do you expect to score between 700 and 800 points?
Mathematics
1 answer:
tatuchka [14]4 years ago
6 0
I the average score is 750 and standard deviation ( sigma ) is 50 points, then score 700 - 800 is between (750 - 1 sigma) and (750 + 1 sigma).
That is 34.1 % + 34.1 % = 68.2 % of the whole population. 
2,000 · 0.682 = 1.364 
We expect 1,364 students to score between 700 and 800 points. 
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She gives away n books per week, so If w =week number , then she has (100-nw) books left at any time.

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replace w+1 in place of w .

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3 years ago
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Neko [114]

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The answer is 3! I believe.

Step-by-step explanation:

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