People with a certain condition have an average of 1.4 headaches per week. A medical researcher believes that the drug they have created will decrease the number of headaches for people with that condition.

1. Identify the population(s).

• people who take the drug get less than 1.4 headaches per week on average.
• the average number of headaches the person gets in a week.
• people who take the drug get 1.4 headaches per week on average.
• all individuals who take the medication.

2 What is the variable being examined for individuals in the population(s)?

• the number of headaches the person gets in a week
• people who take the drug get less than 1.4 headaches per week on average.
• the average number of headaches the person gets in a week.
• people who take the drug get an average of 1.4 headaches per week

3 Is it categorical or quantitative?

• Quantitative
• Categorical

4 Identify the parameter(s).

• all individuals who take the medication.
• the average (mean) number of headaches that people get per week when using the drug.
• whether or not a person who takes the drug gets a headache.
• the proportion of those who take the drug who get a headache.

5 Which hypotheses do we want to test?

• H₀:< 1.4
• H_A:= 1.4

• H₀:= 1.4
• H_A:> 1.4

• H₀:= 1.4
• H_A:< 1.4

• H₀: = 1.4
• H_A:< 1.4