Shape magic 8 ball8/10/2023 ![]() We expected our experimental conclusions to be very similar to that of the expected.We had to test its claimed answers for the good of humanity. Do you wish to continue?Īpplication? So many people put their lives in the hands of the magic 8-ball. Because of human error, shakes could not be exactly alike each time A magic 8-ball error has occurred.Bubbles blurred responses, and additional shakes were needed.Answers sometimes got stuck, eliminating that shake.We have sufficient evidence that the observed distribution of magic 8-ball responses fits our expected distribution. 1156 df = 2Ĭonclusions We fail to reject our Ho in favor of our Ha because our p-value is > =. Ha: the observed distribution of magic 8-ball responses does not fit that of the expected distribution.Ho: the observed distribution of magic 8-ball responses fits that of the expected distribution.Sample size is large enough that all expected counts > 5.In general, the expected and observed responses were similar.Ĭhi-Squared Goodness of Fit Test Assumptions Ambiguous had very similar frequencies, and “yes” was in the middle. The “no” response had the largest difference in % between observed and expected.The graph below is a comparison of our data to the expected.Not in a factory, but by wizards.ĭoes our frequency distribution of responses match that of the expected distribution of eight ball responses?Īfter a series of 80 trials we found our responses to be close to the expected. We shook the 8-ball 80 times in the same two-hand manner to increase accuracy of our experiment and destroy lurking variables LURKING VARIABLES This is really how 8-balls are made.The fortunes are given by a white plastic die in the shape of an icosahedron, floating in a blue liquid, with answers to yes-no questions in raised letters on its 20 triangular faces.It is a hollow, plastic sphere resembling an oversized, black and white 8-ball.The Magic 8 Ball has been used for fortune telling since its creation by Tyco in 1946.MAGIC 8-BALL By: Connie Saltzman, Brandi Kaminski, & Joe Muller
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