An agronomist believes that a newly developed fertilizer will increase the mean harvest of eggplants by more than 2.5 kg. 56 plats were treated with fertilizer and had a mean harvest of 10.5 kg with standard deviation of 1.2 kg. 29 plants were untreated and had a mean harvest of 9.25 kg with standard deviation of 0.7 kg. What is the null hypothesis of the problem? p> 2.5 kg Ob. p= 9.25 9.25< 10.5 kg Od. H= 10.5

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