Imagine that we need to digitally download the text of an ebook at the rate of 35 pages per minute. The number of lines per page is 15, and the number of characters per line is 35. With this scenario in mind, address each of the topics below.

1. Most of what is needed to calculate the number of bits sent per minute is present in the scenario above, but something is missing. What is it?

2. What are the common values for this missing item, and where do these values come from?

3. Which value would you choose from #2? There is not only one correct answer to this but do make sure to justify your choice.

4. With your assumption in #3, calculate the bit rate needed, expressed as bits per second, to download the text of the ebook as described in the scenario. Recall that the bit-rate formula is:

R = b/t where R is the bitrate, b is the number bits, and t is the unit of time.

5. Now that you have calculated the bit rate needed to download the ebook, let us consider how this relates to symbol transmission over a physical circuit. If a modulation scheme on a physical circuit encodes two bits in each symbol, what would the symbol rate need to be in order to download the ebook at the given rate (35 pages per minute)? Make sure to give the value and explain your reasoning.

6. Lastly, if the bandwidth of the circuit is quadrupled, but all other factors including the signal strength and noise strength are kept equal, what would happen to the capacity of the circuit? Make sure to explain your reasoning.