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Veseljchak [2.6K]
3 years ago
15

Scores on an exam are normally distributed with a mean of 76 and a standard deviation of 10. In a group of 230 tests, how many s

tudents score within one standard deviation of the mean?
Mathematics
1 answer:
kirza4 [7]3 years ago
7 0

I think its 156.4, based on the 68% rule

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Helppp please I have limited time
Sophie [7]

Answer:

p = <u>T</u> - a - <u>b</u>

Step-by-step explanation:

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djverab [1.8K]

9514 1404 393

Answer:

  78.5 km

Step-by-step explanation:

Measured at the airport, the angle between the two planes is ...

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The law of cosines tells us the distance between the planes is ...

  d = √(50² +80² -2·50·80·cos(70°)) ≈ √6163.84 ≈ 78.5 . . . km

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2 years ago
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Wittaler [7]

Answer:

The answer would be C

Step-by-step explanation:

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3 0
2 years ago
a box of cereal contains 23.4 ounces. It cost $5.49. What is the cost,to the nearest cent, of the cereal per ounce.
anyanavicka [17]
Do 5.49 / 23.4
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The answer is $0.23
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I really need help with this algebra problem:<br> 5a=89
stiks02 [169]
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