(Answered) Question while researching lifestyle changes to imp rove

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Question: While researching lifestyle changes to imp rove heart health, you come across a research article reporting that the average American in the population consumes about 2,700 calories per day. You come across another article that refutes this, stating that a sample of Americans consumed significantly less than this mean standard on average, t(50) = 2.993, p

(a) Does the test statistic show a significant effect?

(b) What is the proportion of variance for this effect?

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