A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period.

Male Policy Holders:	Single	Married
Sample size	400	900
No. Making claims	76	90

1. Conduct a hypothesis test to determine whether there is a difference in proportion of claims between single and married male policy holders. Use a 0.05 level of significance.
2. [Include calculation and statement]Provide a 95% confidence interval for the difference between the proportions for the two populations.