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The frequency distribution representing the number of frequent flier miles accumulated by employees at Brumley Statistical Consulting Inc. is given below. a. How many employees accumulated less than 12,000 miles? b. Convert the frequency distribution to a cumulative frequency distribution. c. Outside of Connect, portray the cumulative distribution in the form of a cumulative frequency polygon. d. Based on the cumulative relative frequencies, about 75% of the employees accumulated how many miles or less? (Round your answer to 1 decimal place. Enter your answer in thousand miles.)