Instruction 9-1
Microsoft Excel Was Used on a Set of Data

question 153

Multiple Choice

Instruction 9-1
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: $H _ { 0 } : \mu \leq 20.000 ; \alpha = 0.10 ; \mathrm { df } = 45 ; T$ Test Statistic = 2.09;
One-Tailed Test Upper Critical Value $= 1.3006 ; p$ -value $= 0.021 ;$ Decision $=$ Reject.
-Referring to Instruction 9-1,the parameter the biologist is interested in is the

• A)mean number of parasites on Blue Tiger butterflies in Kakadu National Park.
• B)mean number of butterflies in Kakadu National Park.
• C)proportion of butterflies with parasites.
• D)mean number of parasites on these 46 butterflies.

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Definitions:

Passing Through

A term often used to describe a line or curve that goes through a specific point in a graph or geometric figure.

Points

In geometry, a point refers to a precise location in space, often described with coordinates in a given dimension.

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The act of drawing a rough representation of a graph to show its general shape and key points.

Equation

An assertion in math that two expressions are equivalent.