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AnnZ [28]
3 years ago
14

Peter is the owner of a hardware supply shop. He has hired you to check his machines calibration prior to starting production on

a large order. To check this, you set the machine to create 2.0 inch nails and manufacture a random sample of 200 nails. That sample of nails has an average length of 2.024 inches with a standard deviation of 0.205 inches.
Does this sample provide convincing evidence that the machine is working properly or should it be shut down for repairs?
Mathematics
1 answer:
Anastasy [175]3 years ago
3 0

Answer:If we compare the p value and the significance level assumed we see thatso we can conclude that we have enough evidence to FAIL reject the null hypothesis, so we can conclude that the true mean is not different from the specification at 1% of signficance.  

Step-by-step explanation:

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Help!!!
Artyom0805 [142]

Answer:

  C:  y+7=2/5(x+4)

Step-by-step explanation:

The point-slope form of the equation of a line with slope m through point (h, k) is ...

  y -k = m(x -h)

You are given m=2/5 and (h, k) = (-4, -7). Put these numbers into the form and simplify the signs:

  y -(-7) = 2/5(x -(-4)) . . . . . numbers put into the form

  y +7 = 2/5(x +4) . . . . . . . signs simplified . . . . matches choice C

5 0
3 years ago
Factor completely
ZanzabumX [31]
Use the (-b + - sqrt( b^2 - 4ac) ) /2a Formula.
a = 1 b= 10 c= 24
 so you get .. (x+6 )(x+4) A
 
4 0
4 years ago
A circle is inscribed in a 40º-60º-80º triangle. The points of
Vladimir [108]

Answer:

A = 50°

B = 60°

C = 70°

Step-by-step explanation:

If we draw a line from each vertex through the center of the circle, we perpendicularly bisect the line joining the adjacent tangent points.

We then know the original angle is halved and the remaining angle of each right triangle is complementary to half the original.

Now we can subtract the known angles along each line of the original side to find the remaining angle

3 0
3 years ago
What is the quotient of 9−x^2 divided by 3x and x^2+6x+9 divided by 3x?
Naddik [55]

Answer:

44 rem

Step-by-step explanation:

Sorry i dont have an explanation

5 0
3 years ago
The landscaper pours 200 gallons of herbicide in the pond. If the herbicide degrades 10% each week, how much will be in the pond
777dan777 [17]
I belive at 90% will be left

5 0
3 years ago
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