Question: State which test (z-test, t-test, ANOVA, 2 test) is most suitable for each of the following cases: (i) A cereal manufacturer would take a sample

State which test (z-test, t-test, ANOVA, 2 test) is most suitable for each of the following cases:

(i) A cereal manufacturer would take a sample of boxes of cereal from the production line to test whether the population mean weight is less than 450 grams. (2 marks)

(ii) An education researcher wants to compare the teaching effectiveness of five different teaching methods. Final year students are randomly assigned to one of the four groups. The marks obtained by the students in the final examination would be used for the test. (2 marks)

(iii) A domestics helper agency wants to check if the working experience experienced by Indonesian workers is worse than Philippine workers. The proportion of workers reported being mistreated by the employers would be used as reference. (2 marks)

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