Refer to Exercise 1.30. Construct a relative frequency histogram for the supermarket service times. Exercise 1.30 To

Question:

Refer to Exercise 1.30. Construct a relative frequency histogram for the supermarket service times.
Exercise 1.30
To decide on the number of service counters needed for stores to be built in the future, a supermarket chain wanted to obtain information on the length of time (in minutes) required to service customers. To find the of customer service times, a sample of 60 customers' service times was recorded and are shown here:

a. Describe the shape of the distribution. Do you see any outliers?
b. Assuming that the outliers in this data set are valid observations, how would you explain them to the management of the supermarket chain?
c. Compare the relative frequency histogram with the stem and leaf plot in Exercise 1.30. Do the two graphs convey the same information?

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