Question: From a recent production run of light bulb filaments, you select a random sample of 10 filaments. You find that the average life for the filaments in the sample is 2440 hours, with a sample standard deviation of 60 hours. Use these sample results to test. at the 5% significance level, the null hypothesis that the average life for the full population-the entire production run- of filaments is precisely 2500 hours. no more and no less. Report your conclusion and explain.