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valina [46]
3 years ago
11

The graph shows the amount of money paid when purchasing bags of candy at the zoo:

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
8 0

The cost of zero bags of candy .    

You are not going to  pay for no bags of candy  lol!!

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The American Management Association is studying the income of store managers in the retail industry. A random sample of 49 manag
VashaNatasha [74]

Answer:

a) The 95% confidence interval for the income of store managers in the retail industry is ($44,846, $45,994), having a margin of error of $574.

b) The interval mean that we are 95% sure that the true mean income of all store managers in the retail industry is between $44,846 and $45,994.

Step-by-step explanation:

Question a:

We have to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a p-value of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{2050}{\sqrt{49}} = 574

The lower end of the interval is the sample mean subtracted by M. So it is 45420 - 574 = $44,846.

The upper end of the interval is the sample mean added to M. So it is 45420 + 574 = $45,994.

The 95% confidence interval for the income of store managers in the retail industry is ($44,846, $45,994), having a margin of error of $574.

Question b:

The interval mean that we are 95% sure that the true mean income of all store managers in the retail industry is between $44,846 and $45,994.

5 0
3 years ago
The formula that describes an objects motion is given by s=ut+1/2at^2, where s is the distance traveled, u is the initial veloci
attashe74 [19]
We have the following equation:
 s = ut + 1 / 2at ^ 2
 Clear a for the equation:
 1 / 2at ^ 2 = s-ut
 at ^ 2 = 2s-2ut
 a = 2s / t ^ 2-2ut / t ^ 2
 Rewriting:
 a = (2s-2ut) / (t ^ 2)
 Answer:
 
An equation that represents a in terms of other variables is:
 
C. 2s-2ut / t ^ 2
6 0
3 years ago
What are all of the rational zeros of the function g(x) = x^4- x^3+ 4x^2- 4x?
Darya [45]

Yo sup??

We can solve this questions by trying option verification.

We observe that 0 is common among all the options so 0 has to be a zero of the function.

when x=1

g(1)=1-1+4-4=0

Therefore 1 is also a zero of the function.

Since 1 is not there is option 2 and 3, hence our answer is either option 1 or 4

when x=2

g(2)=16-8+16-8=0

Therefore 2 is also a zero of the function.

Hence the correct answer is option D ie 0,1,2

Hope this helps.

6 0
3 years ago
Amie had an operation on her knee. To help it get strong again, she walks once around this rectangular path in the park every mo
77julia77 [94]
You would need to know how long the path is to answer this question

8 0
3 years ago
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I need answers very quick my brain is smol
zalisa [80]
How are even supposed to work that out
6 0
2 years ago
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