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Sophie [7]
3 years ago
5

Is due today Help!!! Algebra ll

Mathematics
1 answer:
guapka [62]3 years ago
7 0

-7x-9y=-8

5x+6y=4

-35x-45y=-40

35x+42y=28

-3y=-12

y=4

5x+6(4)=4

5x+24=4

5x=-20

x=-4

(-4,4)

Hope this helps.

頑張って!

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It can be concluded that the medicated lotion has an effect on treating skin irritations.

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The hypothesis can be defined as follows:  

<em>H₀</em>: There is no difference between the two proportions, i.e. <em>p</em>₁ - <em>p</em>₂ = 0.  

<em>Hₐ</em>: There is a significant difference between the two proportions, i.e. <em>p</em>₁ - <em>p</em>₂ ≠ 0.  

The information provided is:

n₁ = 40

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Compute the test statistic value as follows:

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The test statistic value is 4.69.

The decision rule is:

The null hypothesis will be rejected if the <em>p</em>-value of the test is less than the significance level.

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The null hypothesis will be rejected at any significance level.

Thus, there is a significant difference between the two proportions.

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