The Personnel manager of a large insurance company wishes to evaluate the produc

Question

The Personnel manager of a large insurance company wishes to evaluate the productivity among their workers of three different grades (A. B. and C). A random sample of 9 people from each group was selected and their scores were tabled Is there a difference, on the productivity scores for the three groups? Pan of the data and the ANOVA table are as follows: Which of the following would he the appropriate null hypothesis for testing the claim that there is significant difference in the productivity scores of the 3 groups? Ho: pi_1 = pi_2 = pi_3 astir Ho: pi_1 > pi_2 > pi_3 Ho: pi_1

Explanation / Answer

11) option A is correct

12)above table can be re-written as

total variation among scores =1602

13)calculated value of test stat =3.71

14)critical value =3.40

source of variation SS df MS F p value F crit b/w groups 378 2 189 3.705882 0.039576 3.402826 with in groups 1224 24 51 Total 1602 26

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