Final answer:
The mean number of pages read per day is calculated by dividing the total number of pages by the total number of days. Siriana read an average of 71 pages per day. More information is needed to estimate the professor's reading needs.
Step-by-step explanation:
The student is asking about the mean number of pages read per day over a span of 7 days with a total of 497 pages read. To calculate the mean, you divide the total number of pages by the total number of days. Therefore, the mean number of pages read per day would be 497 pages ÷ 7 days which equals approximately 71 pages per day.
Without needing to perform any calculations in this particular case, we can estimate that reading more than 1,050 pages in 7 days would require a significantly higher daily reading rate. Given that our student Siriana read 497 pages in 7 days, it's very unlikely for the professor to need to read more than 1,050 pages unless the material or requirements differ substantially.
Regarding the probability that the professor will need to read more than 1,050 pages, we would need additional information about the professor's reading habits or requirements. As for the average length of papers being unlikely to be less than 12 pages, this might be deduction based on the typical length of scholarly papers or the context of the assignment given.
Considering the information provided about U.S. adults' reading habits and the median of five books per year, along with the preference for printed books versus e-books, this suggests a trend in reading behavior which does not necessarily correlate with the number of pages a professor might need to read.