The file P09_01.xlsx contains a random sample of 100 light bulb lifetimes. The company that produces these light bulbs wants to know whether it can claim that its light bulbs typically last more than 1000 burning hours.
a. Identify the null and alternative hypotheses for this situation.
b. Can this light bulb manufacturer claim that its light bulbs typically last more than 1000 hours at the 5% significance level? What about at the 1% significance level? Explain your answers.