If you drop a piece of buttered toast on the floor, is it just as likely to land buttered side up as buttered side down? It sure seems like mine always lands buttered side down! Suppose that 7 of the last 10 times I dropped toast it landed buttered side down. In order to carry out a statistical analysis, the One Proportion applet was used to see if my toast fell buttered side down a majority (more than 50%) of the time. Use the dotplot generated by the applet to answer the following questions.

a. How many dots are in the dotplot?
b. What does each dot represent in terms of dropped toast and buttered side down?
c. At what number is the dotplot centered? Could you have determined that before running the applet simulation? Why or why not?
d. Based on 7 of the last 10 slices of toast landing buttered side down and the above dotplot, are you convinced that the long-run proportion of times my toast lands buttered side down is greater than 50%? Explain how you are deciding.
e. Does this prove that my long-run proportion of dropping toast buttered side down is 50%?

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4 8 10 Number of heads