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Salsk061 [2.6K]
3 years ago
9

What is the slope of a line passing through the following points (3,2) (-6,2)

Mathematics
1 answer:
yan [13]3 years ago
6 0
Vas happenin!!!
Hope your day is good


So to find slope you use this equation: y2-y1/x2-x1

2-2/-6 -3

0/-9

Your slope is 0

Hope this helps you out


*smiles*
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Step-by-step explanation:

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2 years ago
The quality-control manager at a compact flourescent light bulb factory wants to test the claim that the mean life of a large sh
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Answer:

a. At the 0.05 level of significance,  there is evidence that the mean life is different from 6,500 hours.

b. The p value= ≈ 0.00480 for z- test which is less than 0.05 and H0 is rejected .

The p value= 0.006913 for t- test which is less than 0.05 and H0 is rejected for 49 degrees of freedom.

c. CI [6583.336 ,6816.336]

d.  The range of CI [6583.336 ,6816.336] tells that the cfls having a different mean life lie in this range.

Step-by-step explanation:

Population mean = u= 6500 hours.

Population standard deviation = σ=500 hours.

Sample size =n= 50

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Sample standard deviation=s=  600 hours.

Critical values, where P(Z > Z) =∝ and P(t >) =∝

Z(0.10)=1.282  

Z(0.05)=1.645  

Z(0.025)=1.960  

t(0.01)(49)= 1.299

t(0.05)= 1.677  

t(0.025,49)=2.010

Let the null and alternate hypotheses be

H0: u = 6500 against the claim Ha: u ≠ 6500

Applying Z test

Z= x`- u/ s/√n

z= 6700-6500/500/√50

Z= 200/70.7113

z= 2.82=2.82

Applying  t test

t= x`- u /s/√n

t= 6700-6500/600/√50

t= 2.82

a. At the 0.05 level of significance,  there is evidence that the mean life is different from 6,500 hours.

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b. The p value= ≈ 0.00480 for z- test which is less than 0.05 and H0 is rejected .

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c. The 95 % confidence interval of the population mean life is estimated by

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6700±116.336

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Ganezh [65]
Hi there!
I'm just gonna answer this and explain as I'm doing it.

So we have (3x10)x8= __x(10x8)
Well, first we look at what they did. They couldn't have changed the equation, but just moved things around.
Now, assuming you know your properties, I'm gonna go ahead and answer it.
(3x10)x8=3x(10x8)
^^
I used the Associative property, which basically says that when 3 or more #s are multiplied, the answer doesn't change no matter how you group the numbers. See how they just moved the numbers around, and only swapped the 3 for the 8?
 
Hope this helped!
6 0
3 years ago
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