Consider the following data set:

4	10	8	7	6	10	11	14	13	14
3	9	8	5	7	6	10	3	11	11
8	8	4	5	5	12	12	3	8	8

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a.	Construct a 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
Total

b.	Construct relative frequency, cumulative frequency, and cumulative relative frequency distributions.(Round "relative frequency" and "cumulative relative frequency" to 2 decimal places.)

Class	Relative Frequency	Cumulative Frequency	Cumulative Relative 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
Total

c-1.	How many of the observations are at least 7 but less than 9?

Number of observations

c-2.	How many of the observations are less than 9?

Number of observations

d-1.	What percent of the observations are at least 7 but less than 9?(Round your answer to 2 decimal places.)

Percent of observations

d-2.	What percent of the observations are less than 9?(Round your answer to 2 decimal places.)

Percent of observations