IDENTIFYING THE LENGTH OF A CONFIDENCE INTERVAL ASYNC 1. Estimate, with 93% confidence, the lifetime of nine volt batteries using a randomly selected sample where: X = 49 hours s = 4 hours n = 36 2. Wilson Electronics claims that their new line of Plasma televisions will last for 60 000 hours. A consumer research group decides to test this claim. The group randomly selects 50 televisions to test. The data from this sample shows that the mean life of a television is 57 000 hours, with a standard deviation of 1200 hours. (A) determine the 95% confidence interval for the mean life of a television? (B) Does the confidence interval support the claim of Wilson Electronics? Explain your