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3 years ago

Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance

Mathematics

1 answer:

Feliz [49]3 years ago

3 0

Answer:

9.5

Step-by-step explanation:

Find the sample variance for the data 9,12,9,14,6. Round the answer to one decimal place. Sample variance.

Step 1

We find the Mean of the numbers

Mean = Sum of terms/ Number of terms

Mean = 9+12+9+14+6/5

= 50/5

= 10

Step 2

We find the sample variance

Formula =

(x - Mean)²/n - 1

n = 5

= (9 - 10)²+(12 -10)²+(9- 10)²+(14-10)²+(6-10)²/5 - 1

= 1+ 4+ 1+ 16+16/5 - 1

= 38/5 - 1

= 38/4

= 9.5

Therefore, Sample variance = 9.5

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drek231 [11]

Answer:163.54$

Step-by-step explanation:

Given data

Volume of Storage(V)= ${10m^3}$

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Let Length be L,Breadth be & height be H

therefore

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Now substitutes the values

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Now cost for base is ${C_1}=2{B^2}\times10$

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Now total cost(C)= ${C_1}+{C_2}$

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Now Differentiating With respect to Breadth to get minimum cost

$\frac{\mathrm{d} C}{\mathrm{d} B}=0$

$we\ get\ B=\sqrt[3]{4.5}=1.65m$

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$H=1.836m$

and mimimum cost C

${C=163.54\$}$

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4 years ago

To own and operate a poster printer, it costs $250 for the printer and an additional $0.20 per poster for ink. To print out post

NARA [144]

Answer:

312.5

Step-by-step explanation:

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3 years ago

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uysha [10]

Answer:

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Step-by-step explanation:

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3 years ago

-5x + 5= -25<br><br> What is the solution to this equation?

Zanzabum

Step-by-step explanation:

$- 5x = - 25 - 5 \\ - 5x = - 30 \\ x = \frac{ - 30}{ - 5} \\ x = 6$