Statistical Sciences 2037A/B Study Guide - Final Guide: Rheumatoid Arthritis, Type I And Type Ii Errors, Statistical Hypothesis Testing
10 Mar 2020
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Enjo is a company that makes environmentally friendly cleaning cloths that require only water (i. e. no additional cleaning products or detergents). The company and independent researchers have conducted studies to compare the effectiveness of enjo cloths to the traditional cleaning products for reducing the amount of bacteria on kitchen surfaces. These studies have found that enjo does reduce bacterial contamination relative to the traditional cleaning products. A medical doctor uses a diagnostic test to decide whether or not his patient has rheumatoid arthritis. The doctor will prescribe treatment only if he thinks the patient has arthritis. In a sense, the doctor is using a null and an alternative hypothesis to decide whether or not to administer treatment. The hypotheses for this test" might be stated as: Null hypothesis (h0): the person does not have arthritis (i. e. no arthritis) Many athletes experience an anterior cruciate ligament (acl) tear in their knee during their career.
