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Brut [27]
3 years ago
14

What is the solution set of the inequality 2(5+3x) >13 +6? A.x 22 C.no solution D.infinitely many solutions

Mathematics
2 answers:
faust18 [17]3 years ago
6 0
I’m pretty sure the answer must be choice B
Nezavi [6.7K]3 years ago
5 0

Answer:

I would choose either A.x 22 or D. infinitely many solutions

Step-by-step explanation:

Since you did put the answer choice B then I don't know what are all the possible answer choices

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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:

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

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Now, find the margin of error M as such

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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

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

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Question b:

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Step-by-step explanation:

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