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DIA [1.3K]
3 years ago
10

NEED CORRECT ANSWER PLEASE! THANKS:)

Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0
The answer is B. (2x + 5)(x + 1)You could answer this by expanding each answer until you found one that matched 2x^2 + 7x + 5, but I will only show how the answer expands:
2x × x = 2x^2
5 × x = 5x
2x × 1 = 2x
5 × 1 = 5

So in total those brackets expand to 2x^2 + 7x + 5. I hope this helps!
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Step-by-step explanation:

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Answer:

The degrees of freedom are given by:

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The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

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And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

Step-by-step explanation:

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The degrees of freedom are given by:

df = n-1=14-1=13

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\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

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Step-by-step explanation:

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Step-by-step explanation:

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