Express the relative frequency to three decimal places

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A random sample of 100 students was chosen from Florida MAT 200 classes. The frequency distribution below shows the distribution for study time each week (in hours).

Study Time (in hours)         Frequency             Relative Frequency

0.0 - 4.9                                      5          

55.0 - 9.9                                   13

10.0 - 14.9                                                               0.22

15.0 -19.9                                  42

20.0 - 24.9

Total                                        100

(a) Complete the frequency table with frequency and relative frequency. Express the relative frequency to three decimal places.

(b) What percentage of the study times was at least 15 hours?

(c) Does this distribution have positive skew or negative skew? Why or why not?

Reference no: EM131332834

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