1.       A random sample of 40 bus riders was surveyed on a...

Question

# 1.       A random sample of 40 bus riders was surveyed on a...

1.      A random sample of 40 bus riders was surveyed on a particular stop of a route on a Monday between 2:00 and 3:00 pm. The frequency distribution below shows the distribution of wait times for a bus (in minutes).  Show all work for the following questions.

Wait Time (minutes) Frequency Cumulative Relative Frequency

1.0 - 2.9 3

3.0 - 4.9 16

5.0 - 6.9 0.725

7.0 - 8.9

0.925

9.0 - 10.9 3

Total 40

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

b)     What percentage of the wait times was less than 5 minutes?

c)      Which of the following wait time groups does the median of this distribution belong to?

1.0 - 2.9, 3.0 - 4.9, 5.0 - 6.9, 7.0 - 8.9, or 9.0 - 10.9?  Explain.

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