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Alexxx [7]
2 years ago
10

On a standardized science test, the seniors at Fillmore High School have a mean score of 430 with a standard deviation of 90.

Mathematics
1 answer:
olasank [31]2 years ago
3 0

Answer:

For random samples of 100 seniors, 68% of the sample means fall between 340 and 520

Step-by-step explanation:

As a property of normal distribution, 68% of sample means fall between mean - sigma(430 - 90 = 340) and mean + sigma (430 + 90 = 520) (here, sigma is standard deviation).

Hope this helps!

:)

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[ Answer ]

\boxed{\bold{84 \ In.^{2} }}

[ Explanation ]

  • Formula For Area Of Trapezoid: \boxed{\bold{\frac{a \ + \ b}{2}Height }}

-----------------------------------------

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\boxed{\bold{[] \ Eclipsed \ []}}

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