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3 years ago

I don’t understand how to solve it

Mathematics

1 answer:

kykrilka [37]3 years ago

8 0

Answer:

x= $878.85

Step-by-step explanation:

1349.99=1350

1350=100% you cross multiply and then divide by 100 you get x = 540

x =40%

504 is how much can be off the original price, 1350-504=810

You would pay 810 dollars if the coupon was 40% off. Now we gotta find how much is the tax rate.

810=100% do the cross multiply and then divide by a 100, you get x=68.85

x =8.5

Then you have to add your tax rate to the price that you are paying, 810+68.85=$878.85.

Hope this helps you!

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Step-by-step explanation:

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$Z = \dfrac{\overline x - \mu}{\dfrac{s}{\sqrt{n}} }$

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Using the Excel Formula:

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For x = 53 and s = 4.6

The test statistics can be computed as:

$Z = \dfrac{\overline x - \mu}{\dfrac{s}{\sqrt{n}} }$

$Z = \dfrac{53-55}{\dfrac{4.6}{\sqrt{36}} }$

$Z = \dfrac{-2}{\dfrac{4.6}{6} }$

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Using the Excel Formula:

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The test statistics can be computed as:

$Z = \dfrac{\overline x - \mu}{\dfrac{s}{\sqrt{n}} }$

$Z = \dfrac{56-55}{\dfrac{5.0}{\sqrt{36}} }$

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Using the Excel Formula:

P-Value = T.DIST(1.2,35,1) = 0.88009

Decision: p-value is greater than significance level; do not reject $\mathbf{H_o}$

$Conclusion: \ There \ is \ insufficient \ evidence \ to \ conclude \ that \$ $\mu < 55$

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