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PSYB01H3 Study Guide - Final Guide: Type I And Type Ii Errors, Repeated Measures Design, Aromatherapy


Department
Psychology
Course Code
PSYB01H3
Professor
Anna Nagy
Study Guide
Final

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Sample Final Exam Questions
Please use this scenario to answer questions 1-5
A researcher compared the number of cavities of children who had used either
Toothpaste brand X or Toothpaste brand Y for a year. At the end of the year, as
predicted, the researcher found that the children who had used brand X had
significantly fewer cavities than the children who had used brand Y. The difference
was significant at the .05 level.
1. What is the null hypothesis?
a. That children using brand x toothpaste will have more cavities than children
using brand y toothpaste
b. That children using brand x toothpaste will have fewer cavities than children
using brand y toothpaste in the population
c. That there will be no difference in the number of cavities amongst the children
sampled using brand x toothpaste, compared to those using brand y toothpaste
d. That there will be no difference in the number of cavities amongst the children
using brand x toothpaste, compared to those using brand y toothpaste in the
population
¨ 2. What is the research hypothesis?
a. That children using brand x toothpaste will have more cavities than children
using brand y toothpaste
b. That children using brand x toothpaste will have fewer cavities than children
using brand y toothpaste in the population
c. That there will be no difference in the number of cavities amongst the children
sampled using brand x toothpaste, compared to those using brand y toothpaste
d. That there will be no difference in the number of cavities amongst the children
using brand x toothpaste, compared to those using brand y toothpaste in the
population
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