Question 28
A factory produces light bulbs. The manufacturer claims that the probability that a randomly selected bulb is defective is 0.1. Ravi suspects that the defect rate is actually higher than claimed. To test this, he randomly selects 10 bulbs from the production line. If two or more bulbs are found to be defective, he rejects the manufacturer's claim; otherwise, he accepts it. Based on the above data, answer the given subquestions.
Find the significance level of the test. Enter the answer correct to three decimal places.