For each narrative, describe the biological hypothesis, experimental design, statistical hypotheses, assumptions, test statistic, and decision rule.

 

e) A statistics instructor at a large western university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final numerical course grade. She selects 12 students for study and asks them to keep track of the number of these problems completed during the. course of the semester. At the end of the class each student's total is recorded along with their final numerical grade. f) Suzuki et al. (2006) measured sand grain size on 28 beaches in Japan and observed the presence or absence of the burrowing wolf spider Lycosa ishikariana on each beach