$\text { TABLE 9-1 }$ Microsoft Excel Was Used on a Set of Data Involving

question 43

True/False

$\text { TABLE 9-1 }$
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 wantsto know if the mean number of parasites per butterfly is over 20 . She will make her decision usinga test witha level of significance of $0.10$ . The following informationwas extracted from the Microsoft Excel outputfor the sample of 46 Monarchbutterflies:

$\begin{array}{llcc} \hline n=46 ; \text { Arithmetic Mean }=28.00 ; \text { Standard Deviation }=25.92 ; \text { Standard Error }=3.82 ; \\\text { Null Hypothesis:} H_{0}: \mu \leq 20.000 ; \alpha=0.10 ; d f=45 ; T \text { Test Statistic} = 2.09;\\\text { One-Tailed Test Upper Critical Value} =1.3006 ;\text { p-value} =0.021 ; \text { Decision = Reject.}\\\hline\end{array}$


-Referring to Table 9-1, the value of þ is 0.90.

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Definitions:

Node

A point along a stem or branch at which leaves, branches, or flowers originate; in networks, a node is a junction or connection point.

Compound Leaves

Compound leaves have a leaf structure where a single leaf is divided into multiple leaflets, each connected to the whole leaf via a petiole.

Leaflets

Leaflets are the individual segments or units of a compound leaf, each resembling a small leaf but part of a larger structure.

Blade

(1) The thin, expanded part of a leaf. (2) The flat, leaflike structure of certain multicellular algae.