A television advertisement claims that a certain brand of cough drop reduces coughing for 8 hours.
Describe an investigation that could be used to determine if this claim is
valid. In your answer, include at
least a description of:
• the treatment to be given to the experimental group
• the treatment to be given to the control group
• the data to be collected
• when the data should be collected
• one observation that would lead to the conclusion that the claim is valid