Company A makes a large shipment to Company B. Company B can reject the shipment if they can conclude that the proportion of defective items in the shipment is larger than 0.1. In a sample of 400 items from the shipment, Company B finds that 47 are defective. Conduct the appropriate hypothesis test for Company B using a 0.1 level of significance.
What is the test statistic? Give your answer to four decimal places.
What is the critical point for the test? Give your answer to four decimal places.