Question

The health commissioner of city B postulated that the mean daily intake of vitamin E (a possible cancer-preventing nutrient) in adults over 20 years of age was 10 mg. Wishing to test this assumption, you draw a random sample of 125 adults from city B and ask them to complete a dietary questionnaire. You find from analyzing the questionnaire that X bar equal 8.4 mg vitamin E per day and s equal 9.1 mg vitamin E per day. State your null and alternate hypotheses, perform the appropriate statistical test, report your conclusion and P-value, and construct a 95% confidence interval for the population mean. Use alpha equal 0.05 (two-tailed)

Answer 1

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