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A random sample of 100 students was chosen from classes. The frequency distribution below shows the distribution for study time each week (in hours). Show all work.
Season Rainfall (in Inches) Frequency Relative Frequency
0.0 - 4.9 2 BLANK
5.0 - 9.9 13 BLANK
10 - 14.9 20 BLANK
15 - 19.9 BLANK 0.40
20 - 24.9 25 BLANK
Total
(a) Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places.
(b) What percentage of the study times was at least 10 hours?
(c) In what class interval must the median lie? 5.0 - 9.9, 10.0 -14.9, 15.0 - 19.9, or 20.0 - 24.9? Why?
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