most of my answers are incorrect. please help with all parts. thank you!

Often, cruise ships conduct all on-board transactions, with the exception of gambling, on a cashless basis. At the end of the cruise, guests pay one bill that covers all on-board transactions. Suppose that 64 single travelers and 84 couples were surveyed as to their on-board bills for a seven-day cruise from Los Angeles to the Mexican Riviera. Below is a summary of the bills for each group. Singles Amount ($) Frequency Relative Frequency 51-100 6 101-150 11 151-200 15 201-250 15 251-300 11 301-350 6 Couples Amount ($) Frequency Relative Frequency 100-150 6 151-200 6 201-250 6 251-300 6 301-350 12 351-400 12 401-450 12 451-500 12 501-550 551-600 E1 Part (a) Fill in the relative frequency for each group. (Round your answers to four decimal places.) Singles Amount ($) Frequency Relative Frequency 51-100 6 0.0909 x 101-150 11 0.0180 x 151-200 15 0.0243 x 201-250 15 0.0243 x 251-300 11 0.0180 x 301-350 6 0.0909 x Couples Amount ($) Frequency Relative Frequency 100-150 6 0.0714 q 151-200 6 0.0714 201-250 6 0.0714 q 251-300 6 0.0714 301-350 12 0.1428 x 351-400 12 0.1428 x 401-450 12 0.1428 x 451-500 12 0.1428 x 501-550 6 0.0714 q 551-600 6 0.0714