Kizspy | Question: 39
(Choose 1 answer)
A researcher wishes to determine the mean energy consumption of a new light bulb. She takes a random sample of 50 bulbs and determines that the mean consumption is 1.5 watts per hour with a standard deviation of 0.8. Construct a 98%confidence interval estimate for the population mean energy consumption of new light bulb.
Α. (1.228; 1.772)
Β. (1.237; 1.763)C. (1.268; 1.732)
D. (1.261; 1.739)
E. None of the other choices is correct
Let 20.01 2.326; 20.02 = 2.054; t0.01:49 = 2.405; 0.02:49 = 2.110
