'hypothesized no difference' is correct and usable in written English.
You can use it as part of a sentence when you are referencing a research study or hypothesis that did not find an expected difference between two factors. For example: The study hypothesized no difference between the two interventions, but the results showed a significant effect.
We hypothesized that no differences would be detected at 40° due to increasing patellar stability.
We hypothesized that no differences in behavior should be observed if the reflectivity of the mirror was irrelevant and the animal was simply holding or sitting in front of an object and staring at it.
Since the study is designed as an equivalence study, we hypothesize there is no difference in diagnostic accuracy between MLPA and TKT.
As hypothesized, the difference between the two effects are not significantly different from zero in small firms (0.03) or large firms (0.24).
We hypothesized this difference in cyclin concentration might bring about a differential expression in FLO11, as G1 cyclin Cln1/2 was shown to be a transcriptional activator of FLO11 [41].
We hypothesized a difference between people with chronic illness or disability and the general population.
We hypothesized that this difference could be explained by differences in the presence of animal farms and differences in temperature.
The authors hypothesized that there is no difference between the results obtained after measurement of electrolytes by the blood gas and auto-analyzers.
We have designed a clinical trial in which we hypothesized that there is no difference in success between immediate or delayed induction protocols.
We hypothesized there would be no difference between conservatively treated radial head fractures with greater 2 mm of displacement and those with less than 2 mm of displacement in terms of patient-reported or clinical outcomes.
