Bad "Histograms"

Last updated 2/20/2020 There is something wrong with each of the "histograms" shown. Move the slider to select a new problem. Check the box to see the answer.
These graphs are based on data from problems 22, 23, 24, 25 and 28 on pages 162-163 of Michael Sullivan, "Fundamentals of Statistics", 3rd edition, Pearson Education Inc. 2011. This applet was updated 8/19/2013, 6/4/2013, 7/2/2014, 8/4/2018, 2/6/2019 and 1/27/2020.