Consider the following frequency distribution: Class Frequency 10 up to 20 37 20 up to 30 40 30 up to 40 50 40 up to 50 29 [ a. Construct the relative frequency distribution. (Round your answers to 3 decimal places.) 10 up to 20 20 up to 30 30 up to 4D 40 up to 50 b. Construct the cumulative frequency distribution and the cumulative relative frequency distribution. (Round \"Cumulative Relative Frequency" to 3 decimal places.) Class Cumulative C_umula'live Frequency Relauve Frequency 10 up to 20 20 up to 30 30 up to 40 40 up to 50 c-1. What percent of the observations are at least 30 but less than 40? (Round your answer to 1 decimal place.) Percent of observations [ |% c-2. What percent of the observations are less than 30? (Round your answer to 1 decimal place.) Percent of observations I'M