The following data on calcium content of wheat are consistent with summary quantities that appeared in the article "Mineral Contents of Cereal Grains as Affected by Storage and Insect Infestation" (Journal of Stored Products Research [1992]). Four different storage times were considered. Is there sufficient evidence to conclude that the mean calcium content is not the same for the four different storage times?Testthe appropriate hypotheses at the 0.05 level.

StorageTimeObservations

0months

58.75

57.94

58.91

56.85

55.21

57.30

1month

58.87

56.43

56.51

57.67

59.75

58.48

2months

59.13

60.38

58.01

59.95

59.51

60.34

3months

62.32

58.76

60.03

59.36

59.61

61.95