A Lightbulb Manufacturing Plant's Production Line Has Determined That the Probability

A lightbulb manufacturing plant's production line has determined that the probability a lightbulb will be defective is 0.04. The quality control team decides to take a random sample of 500 lightbulbs and measure the proportion of those lightbulbs that are defective.
-Use the Normal Probability Calculator applet to approximate the probability the quality control team sees at least 25 defective items in their sample.