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. The most common selection techniques are based on either Akaike information criterion or Bayes factor.