To estimate Type II diabetic patients who take insulin to manage their diabetes. A database involves a random sample of 1200 Type II diabetic patients, 423 of whom report taking insulin to manage their diabetes. (a) [2 marks] Compute 95% confidence interval for the proportion of all Type II dia- betics who take insulin to manage their diabetes. (b) [2 marks] Is there any evidence to show that more than 30% of patients take insulin to manage their diabetes. ( = 0.05) .

1. To estimate Type II diabetic patients who take insulin to manage their diabetes. A database
involves a random sample of 1200 Type II diabetic patients, 423 of whom report taking insulin
to manage their diabetes.
(a) [2 marks] Compute 95% confidence interval for the proportion of all Type II dia- betics who
take insulin to manage their diabetes.
(b) [2 marks] Is there any evidence to show that more than 30% of patients take insulin to
manage their diabetes. ( = 0.05)