An Article in a Journal Examined the Attitudes of Three $1 =$

question 43

Multiple Choice

An article in a journal examined the attitudes of three groups of professionals on the condition of the environment, and quantified their responses on a seven-point scale ( $1 =$ no problem to 7 = disaster very likely) . The mean scores for the groups are: A: $4.90 , B : 4.55$ , and C: $4.51$ . Using an experimentalwise error rate of $\alpha = .05$ , Tukey's minimum significance for comparing means is $0.29$ . Use this information to conduct a multiple comparisons of the means.

• A) The highest mean differs significantly from the other two, but there is no significant difference in the other two means.
• B) There is no significant difference in any of the means.
• C) The lowest mean differs significantly from the other two, but there is no significant difference in the other two means.
• D) All means are significantly different.

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