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padilas [110]
2 years ago
10

Sameer polled a random selection of 120 of the 250 workers at his office to determine whether they were satisfied with their off

ice supply ordering process. The survey showed that 90 of the workers polled were satisfied. With a desired confidence level of 99%, which has a z*-score of 2.58, what is the margin of error of Sameer’s survey?
Mathematics
2 answers:
solmaris [256]2 years ago
8 0
The answer that I found is 10% or B. I'll comment again to let you know if it is correct.
jeka57 [31]2 years ago
6 0
The margin of error can be calculated with the formula:

ME = z · √(p(1-p)/n)

where:
p = sample proportion
n = sample size
z = z-score

In your case:
p = 90 / 120 = 0.75

ME = 2.58 · √(0.75·0.25/120)
      = 0.10
      = 10%

The margin of error will be 10%.
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kari74 [83]

Answer: 50%

Step-by-step explanation:

In 2010, there were only 2 bike manufacturers and they had market shares of 30% and 70%.

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Market shares:

Yamaha = 10%

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2 years ago
A delivery truck is stocked with boxes of leather footballs. The graph shows the relationship between the number of footballs an
pashok25 [27]

Answer:

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If you do that, you'll see that in3 boxes, there are 21 footbals.


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Hope it helped,



BioTeacher101

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Lisa says that the indicated angles cannot have the same measure. Marita disagrees and says she can prove that they can have the
AlexFokin [52]
I agree with Marita, that the angles could have the same measure.  This can be proven if you set the two amounts equal and solve for x. 

9x - 25 + x = x + 50 + 2x - 12

To begin, we should combine like terms on both sides of the equation to start simplifying the equation.

10x - 25 = 3x + 38

Next, we should subtract 3x from both sides and add 25 to both sides to get the variable x alone on the left side of the equation.

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Finally, we should divide both sides by 7, to get rid of the coefficient of x.

x = 9

If you plug in 9 for x in our first equation, you get that both of the angle measurements equal 65 degrees.  This means that Marita is correct, because if x = 9, then the angles would have the same measure.


8 0
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Which equation represents an exponential function with an intitial value of 500? f(x) = 100(5)^x, f(x) = 100(x)^5, f(x) = 500(2)
Leya [2.2K]

Answer:

f(x) = 500(2)^x

Step-by-step explanation:

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100(0)^5 = 0

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