In Example 5.5 (pages 247–248), we calculated some binomial probabilities for inspection of a batch of switches from a large shipment of switches. Suppose that in an SRS of 150 switches, we have 10 failures.
Find the sample proportion.
What is the margin of error for 95% confidence?
Find the 95% confidence interval for the proportion of nonconforming switches in the large shipment from which the SRS was selected.