TABLE 9- 1
Microsoft Excel Was Used on a Set

question 16

Short Answer

TABLE 9- 1
Microsoft Excel was used on a set of data involving the number of parasites found on 46 Monarch butterflies captured in Pismo Beach State Park. A biologist wants to know if the mean number of parasites per butterfly is over 20. She will make her decision using a test with a level of significance of 0.10. The following information was extracted from the Microsoft Excel output for the sample of 46 Monarch butterflies:
$\begin{array}{llcc} \hline n=46 ; \text { Arithmetic Mean }=28.00 ; \text { Standard Deviation }=25.92 ; \text { Standard Error }=3.82 ; \\\text { Null Hypothesis:} H_{0}: \mu \leq 20.000 ; \alpha=0.10 ; d f=45 ; T \text { Test Statistic} = 2.09;\\\text { One-Tailed Test Upper Critical Value} =1.3006 ;\text { p-value} =0.021 ; \text { Decision = Reject.}\\\hline\end{array}$

-Referring to Table 9-1, the power of the test is ______if the mean number of parasites per butterfly on Monarch butterflies in Pismo Beach State Park is 18 using a 0.1 level of significance and assuming that the population standard deviation is 25.92.

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Definitions:

Racial Segregation

The enforced separation of different racial groups in daily life, whether by law or social practice.

Whites-Only

Discriminatory policies or practices that restrict access or rights based on race, specifically excluding non-white individuals or groups.

Voting Rights Act

A landmark piece of federal legislation in the United States that prohibits racial discrimination in voting, enacted in 1965.

Discriminatory Voter Registration Tests

Practices used in the past to prevent certain groups of people, especially African Americans, from voting based on tests that were unfairly administered or inherently biased.