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lubasha [3.4K]
3 years ago
9

What percentage increase is this? 400 to 500

Mathematics
1 answer:
jonny [76]3 years ago
7 0

The answer is 25%

Percent change = [(500 - 400) / |400|] x 100 = [(100) / 400] x 100 = 25 %







                                            hope it helps

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What is w in this equation?<br>-3w - 4 = w + 3​
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Answer:

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1. A flower shop wishes to add the valuable Waimea orchid to its product list. They purchase a large shipment of bulbs from a su
AysviL [449]

Answer:

The concern of the florist that these bulbs are not Waimea orchids, but a similar appearing hybrid maybe true.

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A Chi-square goodness of fit test can be used to perform the hypothesis test.

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<em>H</em>₀: There is no difference between the observed and expected value.

<em>Hₐ</em>: There is a difference between the observed and expected value.

The test statistic is:

\chi^{2}=\sum \frac{(O-E)^{2}}{E}

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Red = 5 × 3 = 15

Violet = 4 × 3 = 12

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The test statistic value is:

\chi^{2}=\sum \frac{(O-E)^{2}}{E}=14.981

The decision rule:

The null hypothesis will be rejected if \chi^{2}\geq \chi^{2}_{\alpha, (k-1)}.

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The null hypothesis will be rejected at 5% level of significance.

Conclusion:

As the null hypothesis was rejected it implies that there is a significant difference between the observed and expected value.

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4 years ago
Does anyone know how to do this?? thanks x
Gre4nikov [31]

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3 years ago
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