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fenix001 [56]
3 years ago
13

Please help ASAP!!! Will give brainlist :)

Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

A': (-1,3)

B': (-4,5)

C': (-3,1)

x-coordinate gets multiplied by -1.

y-coordinate remains unchanged

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An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviatio
Lena [83]

Answer:

The  width is  w = \$ 729.7

Step-by-step explanation:

From the question we are told that

   The population standard deviation is  \sigma =  \% 1,000

    The  sample size is  n  = 50

    The sample mean  is  \= x  =  \$ 15,000

Given that the confidence level is  99% then the level of significance is mathematically represented as  

               \alpha  =  100 - 99

=>            \alpha  =  1\%

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             E =  Z_{\frac{\alpha }{2} *  \frac{\sigma }{\sqrt{n} }

substituting values

              E = 2.58 *  \frac{1000 }{\sqrt{50} }

              E = 2.58 *  \frac{1000 }{\sqrt{50} }

               E = 364.9

The width of the 99% confidence interval is mathematically evaluated as

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substituting values

          w = 2 * 364.9

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5 0
2 years ago
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