Apreliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. included in the sample were: 7 employees from area a, 9 employees from area b, and 12 employees from area c. the test statistic was computed to be 4.91. what can we conclude at the 0.05 level?

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answer: d.) the total number of protons and neutrons is 15

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