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

question 31

True/False

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 null hypothesis would be rejected if a 5% probability of committing a Type I error is allowed.

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Definitions:

Cross-sectional Method

A research design that compares different population groups at a single point in time.

Different Ages

Refers to the diversity of age groups within a population, each having unique physical, psychological, and social characteristics.

Intellectual Change

The evolution or transformation in cognitive functions and processes, such as thinking, reasoning, and understanding.

Correlation Coefficient

A statistical measure that indicates the extent to which two variables fluctuate together, revealing the strength and direction of their relationship.