A sample of women were divided into four age groups: Group A (20-45.9), Group B (46.0-55.9), Group C (56.0-65.9), and Group D (66 or older). Information on calcium intake was collected from each woman. Does mean calcium intake differ across the four age groups? Use alpha=.05.
1) Write out the appropriate null hypothesis and alternative hypothesis;
2) Calculate the test statistic;
3) Give your conclusion including a comparison to alpha or the critical value.
|
Group A
|
Group B
|
Group C
|
Group D
|
|
1820
2588
222
1197
1520
1426
|
191
1098
1529
445
|
724
949
1368
849
429
|
1652
1309
1002
471
869
731
1261
|