Classify each of the specified numbers as a parameter or a statistic. (a) There are 100 senators in the 114th Congress, and 54% of them are Republicans. (b) In 1936, Literary Digest polled 2.3 million adults in the United States, and 57% of them said they would vote for Alf Landon for the Presidency. (c) The survey results from 12 local parks show the mean height of 60 ft for mature oak trees. (d) All the 72 employees at ABC company have a mean income of $52,317 with a standard deviation of $36,829 (e) In a random sample of business owners in the United States, it is found that 63% of the sampled business owners attend at least one business conference per year. 10