Question

Activity 3: Which procedure?

For each question, determine which inference procedure is appropriate (construct confidence interval or perform hypothesis test), and identify the parameter of interest (p, p₁ – p_2, µ_, µ₁ – µ_2, µ_d).

1. What percentage of college students graduate within 5 years?

Test or Interval                               Parameter

2. On average, are college-aged men taller than 6 feet?

Test or Interval                               Parameter

3. Is the acceptance rate at Penn State different than 50%?

       Test or Interval                               Parameter

4. What is the average number of parties attended per month by Penn State students?

Test or Interval                              Parameter

5. Is the percentage of republicans who think the middle class pays too much in taxes different from the percentage of democrats who think the same way?

Test or Interval                               Parameter

6. What is the average change in a person’s heart rate when comparing measurements from before and after a 15-second sprint?

              Test or Interval                               Parameter

Answer 1

What percentage of college students graduate within 5 years?

Interval

Parameter: p

On average, are college-aged men taller than 6 feet?

Test

Parameter: µ

Is the acceptance rate at Penn State different than 50%?

Test

Parameter: p

What is the average number of parties attended per month by Penn State students?

Interval  

Parameter: µ

Is the percentage of republicans who think the middle class pays too much in taxes different from the percentage of democrats who think the same way?

Test

Parameter: p₁ – p₂

What is the average change in a person’s heart rate when comparing measurements from before and after a 15-second sprint?

Interval  

Parameter: µ_d