Use Sheet 4 of the Excel file to answer the following questions. 2 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 confidence level of 0.05. Create a histogram, and calculate @, the t-statistic, and the p-value. From the histogram, can normality be assumed? Pick v Ex: 1.234 t= P= Since the p-value is Pick v than the significance level 0.05, the null hypothesis Pick Pick evidence exists that the mean lifetime is less than 11,000 hours