Question

An inspector inspects a shipment of medications to determine the efficacy in terms of the proportion p in the shipment that failed to retain full potency after 60 days of production. Unless there is clear evidence that this proportion is less than 0.05, she will reject the shipment. To reach a decision, she will test the following a large-sample. To do so, she selects an SRS of 200 pills. Suppose that eight of the pills have failed to retain their full potency. The best point estimate for a 95% confidence interval for the true proportion of pills in the shipment that have failed to retain full potency is ___. Round your answer to three decimal places.

Answer 1

The sample proportion is p = 0.04.

Explanation:

The best point estimate for a 95% confidence interval for the true proportion of pills in the shipment that have failed to retain full potency is ...

Sample of 200 pills.

Eight have failed to retain their full potency.

So the sample proportion is:

`p = (8)/(200) = 0.04`