Question: To test whether the mean time needed to mix a batch of material is the same for machines produced by three manulactureis, needed to mix

To test whether the mean time needed to mix a batch of material is the same for machines produced by three manulactureis, needed to mix the material.

Manufacturer 12 21 27 23 21 3 29 20 26 18 30

Manufacturer 12 21 27 23 21 3 29 20 26 18 30 23 31 19 (a) Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a-0.05. State the null and alternative hypotheses. HO: HH Hy H: Not all the population means are equal. OH: Not all the population means are equal. HH = Hy = Hy Ho: MM HHH H OH: At least two of the population means are equal. H: At least two of the population means are different. HO: HH H Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value=

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