Three Cities Random samples of gasoline prices were obtained in three cities and are shown in the
Question:
a. Assuming the overall level of significance is 0.05, what is the Bonferroni-corrected level of significance for three groups?
b. Report all three sample means. Also state which two means are closest to each other.
c. Carry out two-sample t-tests for all three pairs, and instead of using the four-step method, summarize your findings in a table that reports the t-values, p-values, and conclusions. Base your conclusion on the Bonferroni-corrected level of significance. Do not assume equal variances.
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Related Book For
Introductory Statistics Exploring The World Through Data
ISBN: 9780321978271
2nd Edition
Authors: Robert Gould, Colleen Ryan
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