Dietz and Henrich (2014) were interested in the impact of texting on student learning. A group of 99 college students were randomly assigned to text (N = 50) or not text (N = 49) during a prerecorded psychology lecture. At the end of the 20-minute lecture, students answered a 17-question quiz about the material that had just been presented. Which statistical test should the researchers use to analyze their data?

Twenty-five college students experience the effects of alcohol on reaction time. They perform very basic timed responses in a driving simulator both before and after consuming several alcoholic beverages. The researcher collects a reaction time result for each of the 25 students before and after intoxication, for a total of 50 measures. What are the degrees of freedom for this study?

What is the total costs of Books Department after all support department costs are allocated to production departments using SEQUENTIAL method? 

Which of the following statements best describes a COLONY of bacteria?

Which of the following statements about the Calvin cycle of photosynthesis is false?

As degrees of freedom decrease, the critical cutoff for the t test decreases.

When an egg white is heated, the normally clear, soluble albumin proteins become a solid white due to the disruption of their three-dimensional shape.  This process is defined as:

Which of the following statements about the Calvin cycle of photosynthesis is false?

Which molecule is translated into an amino acid sequence?

Eukaryotic chromosomes differ from bacterial chromosomes because only eukaryotes have