Answer: Yes, it is unusual to find that 993 of the 2500 televisions are tuned to "Eyewitness News".
Step-by-step explanation:
Since we have given that
Number of randomly selected televisions = 2500
Percentage of televisions within the Chicago city limits are tuned to "Eyewitness News" = 36%
So, Number of televisions within the Chicago city limits are tuned to "Eyewitness News" is given by

Yes, it is unusual to find that 993 of the 2500 televisions are tuned to "Eyewitness News".