A random sample of 400 students was chosen from the stat 100 classes. the frequency distribution below show the distribution for study time each week (in hours)
Study Time (in hours) Frequency Relative
0.0 – 5.0 16
5.1- 10.0 56
10.1-15.0 0.25
15.1-20.0 120
20.1-25.0
Total 400
a) complete the frequency table with frequency and relative. Express the relative frequency to two decimal places.
b)what percentage of the study times was not more than 15 hours
c) in what class interval bus the median lie? 5.1-10.0, 10.1-15.0,15.1-20.0 or 20.1-25.0
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