A sample of students were asked to write down a "random" four-digit number. Responses from 150 students are stored in the file Digits. Those digits are stored in SSN8 and SSN9 in the same file. Does the government do a better job at assigning numbers at random? Pick either of the two columns (SSN8 or SSN9) and use technology to test whether there is evidence that the digits are not equally likely ( Some ).

Consider a direct-mapped cache with 216 words in main memory. the cache has 16 blocks of 8 words each. it is a word-addressable computer (rather than a byte-addressable computer which we normally discuss). (a) how many blocks of main memory are there? (b) what is the format of a memory address as seen by the cache, that is, what are the sizes of the tag, cache block, and block offset fields (if they apply)? (c) to which cache block will the memory reference db6316 map?