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The Population Mean for the Elementary Tenacity Test ETT) Is σx=25\sigma_{x}=25

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The population mean for the Elementary Tenacity Test ETT) is 150 with σx=25\sigma_{x}=25 A recent study of elementary school children participating in a school lunch program obtained the following ETT scores.Use a two-tailed z-test and α=0.05\alpha=0.05 The population mean for the Elementary Tenacity Test ETT) is 150 with \sigma_{x}=25 A recent study of elementary school children participating in a school lunch program obtained the following ETT scores.Use a two-tailed z-test and \alpha=0.05

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