微信扫一扫
实时资讯全掌握
|
A nursery sells trees of different types and heights. Suppose that 75 trees chosen at random are sold for planting at City Hall. These 75 trees average 60 inches in height with a standard deviation of 16 inches.
Using this information, construct a 95% confidence interval for the mean height of all trees in the nursery. A. 60 + 1.96(16). B. 0.8 + 1.96(16). C. 60 + 1.96(1.85). |