IMPORTANT: PLEASE FILL IN THE ANSWERS IN THE ATTACHMENTS TO THE WORK THAT IS PROVIDED. Thank you! Resource: Pulse Rate Dataset This worksheet provides you with experience in calculating (by hand or
Introduction to Hypothesis Testing Table PSYCH/625 Version 5 |
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Introduction to Hypothesis Testing Table
Identify whether each research scenario listed in the left column of the top of the matrix, would be a one- or two-tailed test and then justify your decision. For each research scenario in the bottom of the matrix, write what the null and alternative hypotheses would be.
Research Scenario | One-tail or two-tail test | Justification |
A local dermatologist claims that 30% of mole biopsies are unnecessary. Last month at his clinic, 210 out of 634 had benign biopsy results. Is there enough evidence to reject the dermatologist’s claim? | This is one tailed test. There is no need to reject the hypothesis | From the data obtained 210 represent a third of the total male patients that visited the office. This supports the doctors that the 30% of the people visiting there are do need the tests in the first. |
A local dermatologist claims that more than 30% of mole biopsies are unnecessary. Last month at his clinic, 210 out of 634 had benign biopsy results. Is there enough evidence to reject the dermatologist’s claim? | | |
A local dermatologist claims that less than 30% of mole biopsies are unnecessary. Last month at his clinic, 210 out of 634 had benign biopsy results. Is there enough evidence to reject the dermatologist’s claim? | ||
Research Scenario | Null hypothesis: | Alternative hypothesis: |
A pharmaceutical company believes their weight loss drug is more effective than any program on the market. They study two groups of people: Group A is given the drug and Group B is given a placebo. They then compare weight loss over the course of 3 months. | ||
A college professor believes class attendance is different on sunny versus cloudy days. | ||
Researchers hypothesize that rats fed donuts for breakfast will perform worse on a task than those fed a high-protein breakfast. |
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