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3 years ago

Graph the function: f(x)=5/2x-6

1 answer:

5 0

Plug in any value for x and then you will get y. Use the coordinates to plot.
Example
x= 2
5/2(2)-6
5-6
-1
(2,-1)
Then continue to do the same.

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The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship co

Alona [7]

Answer:

95% Confidence interval for the variance:

$3.6511\leq \sigma^2\leq 34.5972$

95% Confidence interval for the standard deviation:

$1.9108\leq \sigma \leq 5.8819$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

$s^2=2.89^2=8.3521$

The confidence interval for the variance is:

$\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}$

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

Then, the confidence interval can be calculated as:

$\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972$

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:

$\sqrt{3.6511}\leq \sigma\leq \sqrt{34.5972}\\\\\\1.9108\leq \sigma \leq 5.8819$

6 0

3 years ago

The length of a rectangle is 3 inches more than twice its width, and its area is 65 square inches. What is the width?

gogolik [260]

Width = 5
5x2 = 10 and the length would 13... which is 3 more inches than twice the width

6 0

3 years ago

Read 2 more answers

When the input x, is -5 K=6x+100

yanalaym [24]

Answer:

the answer is 70

Step-by-step explanation:

just do 6(-5)+100=70

hope this helps

4 0

3 years ago

Read 2 more answers

1) Which expression is a DIFFERENCE?

katovenus [111]

Answer:

B, a difference is a result of subtraction

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2 years ago

0/1<br> Write a rule to describe the dilation.<br><br><br> (x,y) --> ( , )

xxTIMURxx [149]

Answer:

on the grap x,y by using graph tranformation

8 0

3 years ago