Use Sheet 5 of the Excel file to answer the following questions. A company that makes LED light bulbs claims that the bulbs have a lifetime of 11,000 hours. Quality control tests a random sample of 45 light bulbs to determine if the lifetime is less than 11,000 hours at a condence level of 0.05. Create a histogram, and calculate E, the tstatistic, and the pvalue. From the histogram, can normality be assumed? Yes 5 2 Ex: 1.234 No t = p 2 Since the pvalue is than the significance level 0.05, the null hypothesis I evidence exists that the mean lifetime is less than 11,000 hours