Shopping spree The figure below is a cumulative relative frequency graph of the amount spent by 50 consecutive grocery shoppers at a store.

(a) Estimate the interquartile range of this distribution.
Show your method.

(b) What is the percentile for the shopper who spent $19.50?

(c) Draw the histogram that corresponds to this graph.

Transcribed Image Text:

Cumulative relative frequency (%) T 0 10 20 30 40 50 60 70 80 Amount spent ($) 90 90 100