Problem 3. Walkers (10 marks) A medical researcher is interested in determining if there is a relationship between blood pressure and regular walk for adults over 50 A random sample of 240 adults over 50 is selected and the results are given below. Test whether the blood pressure is independent of regular walk. (Use a = 0.05.) Blood Pressure Low Moderate High Continge Walkers 35 64 27 Non-walkers 21 65 28 Figure 1. Blood pressure data. La. Identify the claim and state the null and alternative hypothesis. [2 marks] Lb. Determine the critical value and the rejection region. [2 marks] c. Calculate the test statistic. [4 marks] d. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the conte problem. [2 marks]