Skittles are a popular fruity candy with five different flavors (colored green, orange, purple, red, and yellow).

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Skittles are a popular fruity candy with five different flavors (colored green, orange, purple, red, and yellow). A sample of 66 people recorded their favorite flavor and the results are shown in Table 7.8. Perform a chi-square test, as indicated in the steps below, to see whether or not the flavors are equally popular.

Table 7.8

Purple Green Yellow Red Orange 15 11 18 13

(a) State the null and alternative hypotheses.
(b) If every flavor of skittle were equally popular, how many people (in a sample of 66) would we expect to choose each?
(c) How many degrees of freedom do we have?
(d) Calculate the chi-square test statistic.
(e) What is the conclusion about the popularity of the skittles flavors?

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Statistics Unlocking The Power Of Data

ISBN: 9780470601877

1st Edition

Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock

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