What is the difference between a planned comparison and a post hoc test?

What is a Bonferroni correction (Why would you need this?)?  How do you make a Bonferroni correction?

You have rejected the null hypothesis on your one-way ANOVA.  You have also violated LeVene’s test–uh oh!  However you have used a corrected F statistic and you still reject the null hypothesis.  Which post-hoc test is appropriate?

If contrasts are not ‘orthogonal’, what does this mean?

When looking at confidence intervals for post hocs tests (e.g. Tukey); what does it mean if  0 is within the interval?

Four types of cars are being evaluated on gas mileage.  Model A and Model B are both hybrids, while Model C and Model D are not.  Your research hypothesis is that the two hybrid cars will have better gas mileage than Model’s C and D.  What kind of analysis is appropriate?

Which of the following is NOT a fungal disease of the respiratory tract?

Which pathogen has the CDC classified as an urgent level antibiotic resistant threat and one of the most common healthcare-associated infections?

Entamoeba histolytica and Giardia lamblia are examples of which general classification of pathogenic gastrointestinal microorganism?

Which of the following is an appropriate practice in prescribing antibiotics and NOT a factor in development of widespread of antibiotic resistance?