The phrase "able to conclude what" is correct and usable in written English.
It can be used when discussing the ability to reach a decision or understanding about a specific matter or topic.
Example: "After reviewing all the evidence, I am finally able to conclude what the best course of action should be."
Alternatives: "capable of determining what" or "able to decide what".
Mr. Letterman's company, Worldwide Pants, was able to conclude what is being called an interim agreement with the Writers Guild because it owns the two CBS shows, unlike other late-night shows, which are controlled by the networks that carry them.
Finally, the correlation with apparent age was also calculated to ensure the most relevant clinical signs were taken into account in age perception and to be able to conclude what the influence of photoaging is on our appearance.
If there is a beneficial effect in outcomes for participants in the intervention arm we will be able to conclude that SEPRP is effective but will not be able to conclude what specific components of SEPRP contributed most to such effectiveness.
Orza said it would be difficult to conclude what the study was going to find before the study was concluded.
One may respond along the following lines: If Mary when first confronted with red were able to conclude that she is now seeing what people call red, she thereby acquires a large set of new beliefs about red experiences (that they are produced by roses, such-and-such wavelength combinations and so on).
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For a complete analysis of our results, we determined at what threshold θ c we would be able to conclude equivalence in each separate case, based on the critical t-value for a significance level of 5%.
Only they will be able to conclude a peace deal directly".
The ambassadors they sent forth were true plenipotentiaries, able to conclude treaties on their own authority.
From that I should be able to conclude that that's also wrong, apparently.
I have the report … they have not concluded, I don't know if anyone's going to be able to conclude the crown prince did it.
