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Mashcka [7]
3 years ago
15

The formula for the area of a triangle is

Mathematics
1 answer:
umka21 [38]3 years ago
6 0

Answer:

b = (2A)/h

Step-by-step explanation:

With area formula for triangle:   A = (1/2)*b*h

Solve for b

2*A = 2*(1/2)*b*h

2A = bh

2A / h = b

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p_v= P(\chi^2_{9}>11.517)=0.2419

And on this case if we see the significance level given \alpha=0.1 we see that p_v>alpha so we fail to reject the null hypothesis that the observed outcomes agree with the expected frequencies at 10% of significance.

Step-by-step explanation:

A chi-square goodness of fit test determines if a sample data obtained fit to a specified population.

p_v represent the p value for the test

O= obserbed values

E= expected values

The system of hypothesis for this case are:

Null hypothesis: O_i = E_i[/tex[Alternative hypothesis: [tex]O_i \neq E_i

The statistic to check the hypothesis is given by:

\chi^2 =\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

On this case after calculate the statistic they got: \chi^2 = 11.517

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And in order to calculate the p value we need to calculate the following probability:

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