There are two machines A and B processing the same product. A number of products are randomly selected from the products processed by the two machines, and the diameter of each selected product is measured: A: 20.5 19.8 19.7 20.4 20.1 20.0 19.0 B: 19.7 20.8 20.5 19.8 19.4 20.6 19.2 Assuming that the diameters of the products processed by the two machines follow the normal distribution, and the two population variances are equal. Is there significantly different between the diameters of the products processed by the two machines? (α = 0.05 ).
There are two machines A and B processing the same product. A number of products are randomly selected from the products processed by the two machines, and the diameter of each selected product is measured: A: 20.5 19.8 19.7 20.4 20.1 20.0 19.0 B: 19.7 20.8 20.5 19.8 19.4 20.6 19.2 Assuming that the diameters of the products processed by the two machines follow the normal distribution, and the two population variances are equal. Is there significantly different between the diameters of the products processed by the two machines? (α = 0.05 ).
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There are two machines A and B processing the same product. A number of products are randomly selected from the products processed by the two machines, and the diameter of each selected product is measured:
A: 20.5 19.8 19.7 20.4 20.1 20.0 19.0
B: 19.7 20.8 20.5 19.8 19.4 20.6 19.2
Assuming that the diameters of the products processed by the two machines follow the normal distribution, and the two population variances are equal. Is there significantly different between the diameters of the products processed by the two machines? (α = 0.05 ).
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