Answer: That the judge should instruct the jury that it may, but is not required to, accept the noticed fact as conclusively proven.
Step-by-step explanation:
Judicial notice simply means evidence. It allows the introduction of a fact into evidence in a situation whereby the truth of that fact is well known, that it can't reasonably be doubted.
Based on the information given in the question, the effect of such judicial notice is that the judge should instruct the jury that it may, but is not required to, accept the noticed fact as conclusively proven.