Friday

August 1, 2014

August 1, 2014

Posted by **donna** on Tuesday, May 27, 2014 at 11:04am.

(a) 5 % and

(b) 1 %.

Workers 1 2 3 4 5

Teachers 74 65 72 69 -

Assistants 75 78 74 76 72

Coordinators 56 55 53 52 -

Can someone please help me to solve this question. I tried setting a hypothesis but I dont know if that is correct. Do I have to compare means?

st.statistics

- statistics -
**PsyDAG**, Tuesday, May 27, 2014 at 11:33amWith only 13 employees, it would be best to use X^2 (Chi-square) test.

Ho: no diference

X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency.

∑ = sum of all the cells.

E = (column total * row total)/grand total

df = n - 1, where n = number of cells

Look up value in X^2 table in the back of your textbook.

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