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Marat540 [252]
3 years ago
8

Let X subscript 1 comma... comma X subscript 9 denote the Intelligence Quotient IQ) of a randomly selected individuals. Assume t

hat IQs are normally distributed with mean 100 and variance 162. Let S squared be the sample variance. Then, c S squared tilde chi squared (d f ). Find the constant "c" and degrees of freedom "df" of the chi-squared distribution.

Mathematics
1 answer:
asambeis [7]3 years ago
4 0

Answer:

Step-by-step explanation:

Find attached the solution

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A pyramid shaped building is 311 feet tall and has a square base with sides of 619 ft. The sides of the building are made from r
zmey [24]

Answer:

Surface area of the reflective glass is 543234.4 square feet.

Step-by-step explanation:

Given that: height = 311 feet, sides of square base = 619 feet.

To determine the slant height, we have;

l^{2} = 311^{2} + 309.5^{2}

   = 96721 + 95790.25

   = 192511.25

⇒ l = \sqrt{192511.25}

      = 438.761

The slant height, l is 438.8 feet.

Considering one reflecting surface of the pyramid, its area = \frac{1}{2} × base × height

  area =  \frac{1}{2} × 619 × 438.8

          = 135808.6

          = 135808.6 square feet

Since the pyramid has four reflective surfaces,

surface area of the reflective glass = 4 × 135808.6

                                                          = 543234.4 square feet

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3 years ago
System of quadratic <br><br> x² - y² = 4<br><br> x² + y² = 4
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Step-by-step explanation:

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Step-by-step explanation:


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1872 + 1872

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ELRIS COMEBACK 26/02

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