# Question: Chemicals in the water Refer to Exercise 4 a How

Chemicals in the water: Refer to Exercise 4.

a. How many degrees of freedom are there for SST?? For SSE?

b. Compute MS Tr and MSE.

c. Compute the value of the test statistic for testing the null hypothesis that the population means are all equal.

d. Can you conclude that there are differences among the mean pH levels? Use the a = 0.05 level of significance.

a. How many degrees of freedom are there for SST?? For SSE?

b. Compute MS Tr and MSE.

c. Compute the value of the test statistic for testing the null hypothesis that the population means are all equal.

d. Can you conclude that there are differences among the mean pH levels? Use the a = 0.05 level of significance.

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