Instruction 9-7
Microsoft Excel Was Used on a Set $n = 46$

question 28

True/False

Instruction 9-7
Microsoft Excel was used on a set of data involving the number of parasites found in a random sample of 46 Blue Tiger butterflies captured in Kakadu National Park. A biologist wants to know if the mean number of parasites per butterfly is greater than 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 butterflies:
$n = 46$ ; Arithmetic Mean $= 28.00$ ; Standard Deviation $= 25.92$ ; Standard Error $= 3.82$ ;
Null Hypothesis: $H _ { 0 } : \mu \leq 20.000 ; a = 0.10 ; \mathrm { df } = 45 ; T$ Test Statistic $= 2.09$ ;
One-Tailed Test Upper CriticalValue $= 1.3006 ; p$ value $= 0.021$ ; Decision $=$ Reject.
-Referring to Instruction 9-7,the biologist can conclude that there is sufficient evidence to show that the mean number of parasites per butterfly is greater than 20 with no more than a 1% probability of incorrectly rejecting the true null hypothesis.

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Definitions:

Picometers

A unit of length in the metric system equal to one trillionth of a meter, often used to measure atomic and molecular sizes.

Micrometers

Units of measurement equal to one-millionth of a meter, commonly used in science to measure microorganisms or cellular structures.

Capsid

Protein coat surrounding the nucleic acid of a virus.

Envelope

A flat, usually rectangular or square paper container used for sending letters or documents, or the outer covering of a structure.