An automobile dealer wants information regarding the proportion of customers who still own the car they purchased 5 years earlier. A random sample of 200 customers finds that 85 still own the car they purchased 5 years earlier.

A. Calculate the sample proportion of customers who still own the car they bought. 5 years ago.

B. Construct a 95% confidence interval for the population proportion.

C. Conduct a hypothesis test of the claim that 40% of customers still own they purchased 5 years earlier.

D. Conduct a hypothesis test of the claim that 45% of customers still own the car they purchased 5 years earlier.

E. Conduct a hypothesis test of the claim that 50% of customers still own the car they purchased 5 years earlier.

Please include the test statistic, p-value, and whether to reject or fail to reject