TABLE 9- 1
Microsoft Excel Was Used on a Set

question 33

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 24 using a 0.05 level of significance and assuming that the population standard deviation is 25.92.

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Definitions:

Fractions

Mathematical expressions representing the division of one quantity by another, indicating a part of a whole.

Equal

Having the same value, measure, or quantity as something else.

Precordial Electrode

Electrodes placed on the chest during an electrocardiogram (ECG) to record electrical activity of the heart.

Intercostal Space

The anatomical area between two ribs, which contains muscles, nerves, and blood vessels.