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Too Much Salt. A nutritionist claims that children under the age of 10 years are consuming more than the US Food and Drug Administration's...
Too Much Salt. A nutritionist claims that children under the age of 10 years are consuming more than the US Food and Drug Administration's recommended daily allowance of sodium, which is 2400 mg. To test this claim, she obtains a random sample of 18 children under the age of 10 and measures their daily consumption of sodium.
1. What is (are) the parameter(s) of interest? Choose one of the following symbols (m (the mean of one sample); mD (the mean difference from a paired (dependent) design); m1 - m2 (the mean difference from independent samples) and describe the parameter in context in one sentence.
2. Depending on your answer to part (a), construct one or two histograms and one or two boxplots to visualize the distribution(s) of your sample data. Remember to properly title and label these graphs. Copy and paste these graphs into your document.
3. Describe the shape of the histogram(s) in one sentence.
4. Does the boxplot(s) show any outliers? Answer this question in one sentence.
5. Is inference appropriate in this case? Why or why not? Defend your answer using the graphs in two to three sentences.