A randomized block experiment was performed to study six corn varieties, which were grown in four experimental parcels of land in different locations, treated as blocks. The yields are recorded below in hundreds of bushels per acre  Analyze the responses fully and report your findings. Carry out the tests at level of significance, α=5%.

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Corn varieties Parcel I II III IV V VI 1234 1 48.8 50.6 47.8 37.2 37.2 45.9 48.3 58.8 42.8 35.1 38.0 43.5 49.5 51.2 55.9 34.2 38.8 43.8 59.5 59.5 57.8 39.7 36.4 47.3