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Sliva [168]
2 years ago
7

What is the standard deviation of the following data set:

Engineering
1 answer:
EastWind [94]2 years ago
3 0

Answer:

See Explanation

Explanation:

The question is incomplete as the data set are missing. However, I'll use the following data to answer your question:

<em>5,12,3,18,6,8,2,10 </em>

Start by calculating the mean:

Mean = \frac{\sum x}{n}

Mean= \frac{5+12+3+18+6+8+2+10}{8}

Mean= \frac{64}{8}

Mean = 8

Standard deviation is calculated using:

SD = \sqrt{\frac{(x_i - Mean)^2}{n}}

This gives:

SD = \sqrt{\frac{(5 - 8)^2+(12 - 8)^2+(3 - 8)^2+(18 - 8)^2+(6 - 8)^2+(8 - 8)^2+(2 - 8)^2+(10 - 8)^2}{8}}

SD = \sqrt{\frac{(-3)^2+(4)^2+(- 5)^2+(10)^2+(-2)^2+(0)^2+( - 6)^2+(2)^2}{8}}

SD = \sqrt{\frac{9+16+25+100+4+0+36+4}{8}}

SD = \sqrt{\frac{194}{8}}

SD = \sqrt{24.25}

SD = 4.92

<em>Apply the above steps in the original question, then you will get your correct answer.</em>

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Answer:

0.08kg/s

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5. (5 points) Select ALL statements that are TRUE A. For flows over a flat plate, in the laminar region, the heat transfer coeff
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Answer:

The following statements are true:

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A well insulated turbine operates at steady state. Steam enters the turbine at 4 MPa with a specific enthalpy of 3015.4 kJ/kg an
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Answer:

power developed by the turbine = 6927.415 kW

Explanation:

given data

pressure = 4 MPa

specific enthalpy h1 = 3015.4 kJ/kg

velocity v1 = 10 m/s

pressure = 0.07 MPa

specific enthalpy h2 = 2431.7 kJ/kg

velocity v2 = 90 m/s

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solution

we apply here  thermodynamic equation that

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h1 + \frac{v1}{2}  + q = h2 + \frac{v2}{2}  + w

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3015.4 *1000 + \frac{10^2}{2}  =  2431.7 * 1000 + \frac{90^2}{2}  + w

solve we get

w = 579700 J/kg = 579.7 kJ/kg

and

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W = 11.95 × 579.7

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3 years ago
All holly plants are dioecious—a male plant must be planted within 45 to 55 feet of the
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