假设由某汽车制造商提供的36辆新车组成的样本中,每辆新车的疵点数如下:1 2 0 0 3 0 1 1 2 2 2 0 1 0 2 0 1 3 0 1 2 1 0 1 0 3 0 1 1 1 0 1 0 2 0 1。求该汽车制造商生产的汽车每辆疵点数的总体均值u的95%的置信区间。(Z 0.05=1.645,Z0.025=1.96)
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Passage 1 Questions 1 to 5 are based on the following passage. Hummingbirds include the smallest birds in the world, but they belong to one of the latest group of birds, the Trochilidae family. These birds are foun