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Dafna11 [192]
3 years ago
6

Evaluate the determinant for the following matrix [3 -5 / 1 1]

Mathematics
1 answer:
Natalka [10]3 years ago
6 0

Answer:

<h2>A. -2</h2>

Step-by-step explanation:

\det\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] =ad-bc\\\\\det\left[\begin{array}{ccc}3&-5\\1&1\end{array}\right] =(3)(1)+(-5)(1)=3-5=-2

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Answer:

<em>The calculated value Z=1.2413 < 1.96 at 0.05 level of significance</em>

<em>Null hypothesis is accepted </em>

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Step-by-step explanation:

<u><em>Step(i):-</em></u>

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<em>                                     P=68%= 0.68</em>

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<em>Alternative Hypothesis :H₁ : p > 0.68</em>

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<em>Test statistic</em>

<em>                          </em>Z = \frac{p^{-}-P }{\sqrt{\frac{P Q}{n} } }<em></em>

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<em>Level of significance </em>

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<em>The calculated value Z=1.2413 < 1.96 at 0.05 level of significance</em>

<em>Null hypothesis is accepted </em>

<em>An instructor in the English department at CBC believes rates at CBC may be equal to the state average</em>

<em></em>

<em></em>

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