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The following two models were estimated to analyze the demand for chicken around

Mzumbe universitycampus.
I.Qc = 43.310 –15.298Pc –9.86Pb + 39.8Pf + 1.87Y.
(3.05)(45.467)(13.44)(20.245)(0.154)
R-square=0.98
II.Qc=-17.288+61.138Pc+2.046Y.
(1.92) (22.8) (0.077)
R-square=0.99
Where Qc = quantity of chicken demanded in 2012.
Pc=price ofchicken.
Pb = price of beef.
Pf = price of fish.
Y=income.
The variances of Prices of beef and fish are respectively180.49and409.87,and their
covarianceis 112.54.Figuresinparenthesis are t-ratios.
Required:
i)Do the prices of chicken,beef and fish and income simultaneouslybinfluence
demand for chicken?

Yes, the prices of chicken, beef, and fish and income all simultaneously influence the demand for chicken, as evidenced by the high R-squared values of both models (0.98 and 0.99). The t-ratios for all of the variables in both models are also significant, indicating that they have an effect on the demand for chicken.