Question
a. Find the expected frequency for each cell. A B Total 1 20 20 30 30 50 50 2 30 30 45 45 75 75
a. Find the expected frequency for each cell.
A
B
Total
1
20
20
30
30
50
50
2
30
30
45
45
75
75
Total
50
50
75
75
125
125
(Type integers ordecimals.)
b. Compare the observed and expected frequencies for each cell.
The totals for the observed and expected frequencies are the same.
C. compute 2STAT. Is it significant at =0.05?
First let 1 be the proportion of all events of interest inA, and let 2 be the proportion of all events of interest in
Upper H 0 : pi 1 equals pi 2
H0:1=2
Upper H 1 : pi 1 not equals pi 2
H1:12
Calculate the test statistic.
x2STAT =
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
