For the following questions , identify the type of test thatshould be used. Simply use the corresponding letter: A) One-samplez test (for a mean); B) One-sample t-test; C) One-sample z-test fora proportion (or a chi-squared goodness-of-fit); D) Chi-squaregoodness of fit (and a z-test is not appropriate); E) Two-samplez-test for a difference between proportions (or a chi-squared testfor independence); F) Chi-square test for independence (and az-test is not appropriate); G) Simple regression; H) Multipleregression; I) Two-independent samples t-test (with homogeneity ofvariance); J) Two-independent samples t-test (without homogeneityof variance);Â Â Â Â Â Â K) Two-relatedsamples t-test; L) One-way (independent measures) ANOVA; M) One-wayRepeated measures ANOVA; N) Two-way ANOVA (independent, mixed, orrepeated measures); O) Mann-Whitney; P) Wilcoxon; Q)Kruskal-Wallis; R) Friedman; If you are going down theinterval/ratio branch, it is safe to use parametric measures,unless something is directly stated that clearly indicatesotherwise, or unless the data strongly and unambiguously indicatesotherwise. Similarly, it is safe to assume homogeneity of varianceunless it is clearly indicated otherwise. Do not try to analyzewhether or not the experiment is tenable or practical or flawless.This is not your concern right now. Most of the below were writtenby students in this class.
4.        The managerof a grocery store selected a random sample of 14 customers toinvestigate the association between the number of customers in acheckout line and the time it takes to checkout. As soon as theselected customer entered the end of the line, data was collectedon the number of customers in the line in front of the selectedcustomer and the time, in seconds, until they finished checkout.This store can get very crowded and there can be up to twentycustomers in a line.
5.        Thomas wantsto find out if California bees prefer red or yellow flowers. Hesets up a camera that faces both a red and a yellow flower. (Thered and yellow flowers are next to each other.) He then counts thenumber of bees that visit the red flower and the number of beesthat visit the yellow flower. He has multiple cameras set upthroughout California. Thomas does not feel comfortable makingparametric assumptions. [Note to the student who wrote this:Obviously I changed your question a little bit, which changes theanswer.]
6.        While gradingessays, a TA noticed that students who hand-wrote the essay seemedto do worse than those who typed it. The TA also feels that thishypothesis mainly affects female students. She wants to check this,too; thus, she notes if the essay were written by a male or afemale. The dependent variable is total point score on the essayand can be assumed to be interval in nature.
