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trapecia [35]
2 years ago
10

If

Mathematics
1 answer:
Greeley [361]2 years ago
4 0

Answer:i dont know

Step-by-step explanation:

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In Applied Life Data Analysis (Wiley, 1982), Wayne Nelson presents the breakdown time of an insulating fluid between electrodes
ale4655 [162]

Answer:

The sample mean is \bar{x}=14.371 min.

The sample standard deviation is \sigma = 18.889 min.

Step-by-step explanation:

We have the following data set:

\begin{array}{cccccccc}0.15&0.82&0.81&1.44&2.70&3.28&4.00&4.70\\4.96&6.49&7.25&8.03&8.40&12.15&31.89&32.47\\33.79&36.80&72.92&&&&&\end{array}

The mean of a data set is commonly known as the average. You find the mean by taking the sum of all the data values and dividing that sum by the total number of data values.

The formula for the mean of a sample is

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

where, n is the number of values in the data set.

\bar{x}=\frac{0.15+0.82+0.81+1.44+2.7+3.28+4+4.7+4.96+6.49+7.25+8.03+8.4+12.15+31.89+32.47+33.79+36.80+72.92}{19}\\\\\bar{x}=14.371

The standard deviation measures how close the set of data is to the mean value of the data set. If data set have high standard deviation than the values are spread out very much. If data set have small standard deviation the data points are very close to the mean.

To find standard deviation we use the following formula

\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} }

The mean of a sample is  \bar{x}=14.371.

Create the below table.

Find the sum of numbers in the last column to get.

\sum{\left(x_i - \overline{X}\right)^2} = 6422.0982

\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} }       = \sqrt{ \frac{ 6422.0982 }{ 19 - 1} } \approx 18.889

7 0
3 years ago
Solve for x: -24 = 6x<br> GIVING BRAINLIST!!!
Olin [163]

Answer:

The answer is x = -4

Step-by-step explanation:

~Hoped this helped~

7 0
3 years ago
PLEASE HELP ME!!!!!! I NEED HELP REALLY FAST!! I WILL BE MARKING BRAINLIEST!!!!!!
viva [34]

Common difference is +6 and I think nth term is 5 (pretty sure it's always the first term) and the second one im not so sure about I'm sorry.

4 0
3 years ago
Read 2 more answers
• I need a well explained ans ...<br>• spams no needed ​
WITCHER [35]

Answer:

Sry if it is wrong..........

4 0
2 years ago
Read 2 more answers
What is the range of the function f(x)=3x−1f(x)=3x-1 when the domain is {-1, 0, 1}?
Triss [41]
<span>f(x)=3x−1

</span><span>domain is {-1, 0, 1}

3(-1) -1 = -4
3(0) - 1 = -1
3(1) - 1 = 2

Range { -4,  -1,  2}</span>
4 0
3 years ago
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