Kizspy | Question: 32
(Choose 1 answer)
A simple random sample of 15-year-old boys from one city is obtained and their weights are listed below:
150 147 136 180 173 117 168 170
Construct a 95% confidence interval estimate for the mean weight of this population. Assume that the standard deviation of the weights of all 15-year-old boys in the city is known to be 16.7 and population has normal distribution.
Α. (143.552; 166.698)Β. (145.412; 164.838)
C. (143.936; 166.314)
D. (141.161; 169.089)
E. None of the other choices is correct
Let 20.05 1.645; 20.025 = 1.960; to.05:7 = 1.895; to.025:7 2.365
