d-1. What percentage of the observations are at least 7 but less than 9? (Round your answer to the nearest whole percent.) Percentage of observations % d-2. What percentage of the observations are less than 9? (Round your answer to the nearest whole percent.) Percentage of observations %c-1. How many of the observations are at least 7 but less than 9? Number of observations H c-2. How many of the observations are less than 9? Number of observationsb. Construct relative frequency, cumulative frequency, and cumulative relative frequency distributions. (Round "Relative Frequency" and "Cumulative Relative Frequency" to 2 decimal places.) Relative Cumulative Cumulative Class Frequency Frequency Relative Frequency 3 up to 5 0.17 5 up to 7 7 up to 9 9 up to 11 11 up to 13 13 up to 15Consider the following data set: 9.3 6.3 8.1 8.8 13.2 12.3 12.2 11.1 8.2 6.2 11 .5 6.5 14.8 6.4 7.8 4.5 5.4 8.8 12.1 13.1 12.4 12.5 9.5 5.5 12.1 13.1 10.1 12.3 12.2 11.1 Click here for the Excel Data File a. Construct the frequency distribution using classes of 3 up to 5, 5 up to 7, etc. Class Frequency 3 up to 5 5 up to 7 7 up to 9 9 up to 11 11 up to 13 13 up to 15