An electrical rm manufactures light bulbs that have a length of liie that is approximately nurmally distributed Wllh a standard deVIalien of 45 hours, Haw large a sample is needed if we Wish to be 92% condent that aursample mean Wlll he Within 14 hours oithe true mean'? Click here I0 View p_age 1 cf the standard normal distribution table Click here to View [age 2 of the standard nurmal (1 billion tab 9 Click here to view page 1 of the table of critical values oi the ted tributiun. Click here I0 View p_age 2 of the table Df critical values of the LdlSUlbullul'l The required sample size is , (Round up to the nearest whole number as needed)