TABLE 9- 1
Microsoft Excel Was Used on a Set

question 85

True/False

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 null hypothesis would be rejected if a 4% probability of committing a Type I error is allowed.

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Definitions:

Heterochrony

An evolutionary change in the timing or rate of developmental events, leading to changes in size and shape among descendants.

Cleavage

The division of cells during the early stage of embryonic development or a physical split or division.

Germinal Period

The period that begins at conception and lasts until the developing organism becomes attached to the wall of the uterus about 8 to 10 days later.

Prenatal Development

Relates to the process of growth and development within the womb from conception to birth.