Final answer:
Approximately 1.21% of U.S. households were tuned into the final 2009 episode of American Idol; this is rounded down to 1% when reporting as the nearest whole percentage.
Step-by-step explanation:
The question asks what percentage of households with TVs in the United States were tuned into the final episode of American Idol in 2009. Given that the number of households reported to have watched the show is 1,423 (in millions), and the total number of U.S. households with TVs is 118 million, we can calculate the percentage as follows:
To find the percentage, we use the formula: (Number of households watched / Total number of households) × 100
(1,423 / 118 million) × 100
After calculating, we find that the answer is approximately 1.21%, which, when rounded to the nearest percent, is 1%.