ASAP
Four methods are under development for making discs of a superconducting material. 50 discs are made by each method and they are checked for superconductivity when cooled with liquid nitrogen. Use the 0.05 level of significance to test whether the proportions of superconductors are the same for the four methods. (8 marks)
Four methods are under development for making discs of a superconducting material. 50 discs are made by each method and
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Four methods are under development for making discs of a superconducting material. 50 discs are made by each method and
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