How Long to Cook a Whole Chicken. 1  2-1/2 to 3 pounds: Roast at 375 degrees F for 1 to 1-1/4 hours. 2  3 to 3-1/2 pounds: Roast at 375 degrees F for 1-1/4 to 1-1/2 hours.3  3-1/2 to 4 pounds: Roast at 375 degrees F for 1-1/4 to 1-3/4 hours. 4  4-1/2 to 5 pounds: Roast at 375 degrees F for 1-1/2 to 2 hours.ow Long to Cook a Whole Chicken. 1  2-1/2 to 3 pounds: Roast at 375 degrees F for 1 to 1-1/4 hours. 2  3 to 3-1/2 pounds: Roast at 375 degrees F for 1-1/4 to 1-1/2 hours.
The two main types of hypotheses are simple and complex hypothesis.  The simple hypothesis predicts the relationship between a single  dependent and independent variables. Oâ¦n the other hand, the complex  hypothesis describes the relation between two or more dependent and  independent variables.
an alternative framework for statistical hypothesis testing is to specify a set of statistical models one for each candidate hypothesis and then use model selection techniques to choose the most appropriate model