Kizspy | Question: 9
(Choose 1 answer)
An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard dev an average life of 780 hours, find a 96% confidence interval for the population mean of all bulbs produced by this firm.
Α. [765, 795]
Β. [665, 955]
C. [775, 785]
D. [865, 895]
E. None of the other choices is correct
Let 20.04 1.751, 20.02 = 2.054 10.02.292.15. 10.04.29 = 1.814
