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3 years ago

12

Which answer choice should I choose? Im thinking C but thinking i am wrong

1 answer:

dexar [7]3 years ago

5 0

Answer:

Natural numbers

Step-by-step explanation:

Rational numbers are numbers which can be expressed in the form a/b ; such that b ≠ 0 ; hence, rational numbers can be certain non-recurring decimal values.

Integer values are numbers which can be written without any fractional component. While natural numbers are characterized as being whole and non-negative

To represent population values, number of people or species cannot be fractional and cannot be negative, hence natural numbers is the best option.

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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>

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Step-by-step explanation:

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

<em>Given Population proportion </em>

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

<em>Sample proportion </em>

<em> </em> $p^{-} =\frac{x}{n} = \frac{179}{250} = 0.716$ <em></em>

<em>Null hypothesis : H₀ : p = 0.68</em>

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

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

<em>Test statistic</em>

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

<em> </em> $Z = \frac{0.716-0.68 }{\sqrt{\frac{0.68 X 0.32}{250} } }$ <em></em>

<em> Z = 1.2413</em>

<em>Level of significance </em>

<em> </em> $Z_{0.05} = 1.96$ <em></em>

<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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4 years ago