American Hospital Association database

One survey indicated that at least 68% of all small hospitals have opted out of the birthing business. Suppose you believe that this figure is too high. Use the small hospitals only part of the AHA database as your sample to test to determine if, as you believe, the percentage of small hospitals in the United States that have no births during the previous year is less than 68%. (Round observed z value to 2 decimal places, e.g. 15.25 and critical z value to 3 decimal places, e.g. 15.251