In a linear regression model without an intercept, if we have only 1 predicting variable in the model and that predicting variable is a qualitative variable with 6 categories, how many dummy variables in the model should we include?

In ANOVA, when is the total number of observations and k is the number of groups, what is the degrees of freedom for the pooled variance estimator? 

Which antibiotic can be used to treat methicillin resistant Staphylococcus aureus (MRSA) in osteomyelitis?

All of the following are true statements regarding guaifenesin EXCEPT: 

The client on enalapril is complaining of a dry, non-productive cough.  After a clinically negative exam, how should the nurse practitioner address the cough?

All of the following are important pretherapy medical histories to obtain prior to ordering diphenhydramine EXCEPT: 

The client with atrial fibrillation has a Prothrombin time of 27 and INR of 2.8 without any active bleeding.  The client does not have any mechanical heart valves nor history of stroke. Current dose for the last 3 weeks is warfarin 2.5 mg PO at bedtime.  What is the appropriate intervention by the  prescriber?

What is the value for E in the ANOVA table?

What is an appropriate choice of antibiotic for a seven-year-old with first episode of cellulitis without previous medical history?  

All of the following are adverse drug reactions (ADR) for nortriptyline EXCEPT