Kizspy | Question: 15
(Choose 1 answer)
A random sample of 16 fluorescent light bulbs has a mean life of 645 hours with a standard deviation of 31 hours. Construct a 95 Assume the population has a normal distribution.
Α. (876.2, 981.5)
Β. (628.5, 661.5)
C. (531.2, 612.9)D. (321.7, 365.8)
E. None of the other choices is correct
Let
20.025 1.96, 20.05 = 1.65 to.025,152.13, to.05,15 = 1.75
