Question

Kate Sanders, a researcher in the department of biology at IPFW University, studied the effect of agriculture contaminants on the stream fish population in Northeastern Indiana. Specially designed traps collected samples of fish at each of four stream locations. The research question was, "Did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender?" Observed frequencies were as follows:

A B C D

Male 49 44 49 39

Female 43 46 36 44

To solve this type of chi-square testing for equality of multiple proportions, we would need to create an expected table. Provide the value for the ??? box.

	A	B	C	D
male	???
female

Note: as always, keep four decimal places when entering in your responses.

Answer 1

P value for corresponding degrees of freedom three and corresponding chi square score 6.1868 is

0.102867

P value is large enough to fail to reject null hypothesis. it means there is not sufficient evidence to conclude that proportions are different.another word we can say that there is not sufficient evidence to conclude that differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender.

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