Question: Random sampling from four normally distributed populations produced the following data: a. Calculate the grand mean. b. Calculate SSTR and MSTR . c. Calculate SSE

Random sampling from four normally distributed populations produced the following data:

a. Calculate the grand mean.
b. Calculate SSTR and MSTR .
c. Calculate SSE and MSE .
d. Specify the competing hypotheses in order to determine whether some differences exist between the population means.
e. Calculate the value of the F(df1, df2) test statistic.
f. Approximate the p-value.
g. At the 10% significance level, what is the conclusion to thetest?

Treatments 13 10 13 13 15 12 13 -,--11.3 2.33 | =-12 | xc =-10.4 | Xo=-13.3 s 2.3

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