1. For this first set of questions, determine what kind of inferential procedure
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Question
1. For this first set of questions, determine what kind of inferential procedure you would want to use: one-sample t procedure, matched pairs t procedure, two-sample t procedure, one-sample z procedure, or two-sample z procedure. Briefly explain your choice.
(a) A random sample of people were asked if they prefer burritos from Chipotle or Qdoba.
(b) Do UVa students spend more on textbooks than Va Tech students? Random samples of students from both schools are asked how much money they spent on textbooks the previous semester.
(c) Do people marry other people with similar intellect? A sample of married couples is chosen randomly, and the IQ scores for husbands and wives were recorded.
(d) Two sets of high school students each were taught algebra by two methods. The experimental group used programmed learning and no formal lectures; the control group was given formal lectures by a teacher. At the end of the experiment both groups were given a standardized test, and the number of students scoring above 85% was recorded. Does programmed learning lead to better results?
(e) Do UVa students lack sleep? A random sample of UVa students are asked how many hours of sleep they get in a typical week during the semester.
Explanation / Answer
One sample Z test – testing of random sample with independent burritos preferences Two random samples from two school asked to spend money- Two-sample t test Two sample data of husband and wife- two sample Z test Two sample Z procedures -followed different procedures and test between population means One sample Z test, single variable data with varied hours of sleep in the population
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