How many students were observed in this study How many stude

How many students were observed in this study? How many students studied 3 nights per week? How many students studied at feast 3 nights per week? #29. The following is a cumulative percent distribution for data on minutes spent exchanging in a population-based study with college students. Base on the data in this table, in which interval does the largest portion of college students fall?

Solution

Breaking the cumulative percentages to particullar intervals

0-19 15%

20-39 10 %

40-59 10%

60-79 20%

80-99 15%

100-119 15%

120-139 15%

Clearly from the above table the interval 60-79 contains the largest portion (20%) of students