EST 2703 Summer 1 Whitaker Justin Pena Homework: Week 7 Homework Sav Score: 0 of 8 pts 4 of 12 (2 complete) HW Score: 10.67%, 10.67 of 100 9.1.14-T Question Help The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,473 hours. The population standard deviation is 700 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,323 hours. a. At the 0.05 level of significance, is there evidence that the mean life is different from 7,473 hours? b. Compute the p-value and interpret its meaning. c. Construct a 95% confidence interval estimate of the population mean life of the light bulbs. d. Compare the results of (a) and (c). What conclusions do you reach? a. Let u be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H1. Ho: H =1 H1: H # 7533 X Vi More Enter your answer in the edit fields and then click Check Answer. (