a)Are the samples independent? Justify your answer.
(b) State the appropriate null and alternative hypotheses to test the claim of the
research.
(c) Calculate the value of the test statistic and test the hypotheses assuming ? = 0.05
using critical value approach.
d)If the interest is to test whether the VIQ and PIQ scores of patients with chronic illness is different or not at 2% level of significance, construct an appropriate confidence interval and give the decision with justification.