One of the most popular products sold by a manu- facturer of electrical fuses is the standard 30-ampere fuse used by electrical contractors in the construction industry. The company has tested a simple random sample of 16 fuses from its production output and found the amperages at which they "blew" to be as shown here. Given this information, and assuming the data are from a normally distributed population, construct and interpret the 95% confidence interval for the population mean amperage these fuses will withstand.3
30.6 30.2 27.7 28.5 29.0 27.5 28.9 28.1
30.3 30.8 28.5 30.3 30.0 28.5 29.0 28.2 amperes