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Your friend has conducted a study to examine health differences across racial groups. He draws several conclusions based on his study's results. For each of
Your friend has conducted a study to examine health differences across racial groups. He draws several conclusions based on his study's results. For each of your friend's conclusions, do you agree or disagree with your friend? Please explain your answer.
- Your friend's null hypothesis was that the mean body mass index among Asian/Pacific Islanders is similar to the mean body mass index among Hispanics. He selected a significance level of 0.05 and got a p-value of 0.01. In reality, the mean body mass index among Asian/Pacific Islanders should be different from the mean body mass index among Hispanics. Your friend concludes he made a Type I error.
- Your friend's study determined the mean body mass index to be 21.5 kg/m2 among Non-Hispanic Whites and 21.8 kg/m2 among African Americans. The p-value he gets for this difference is 0.0009. He concludes the higher body mass index among African Americans relative to Non-Hispanic Whites to be an extremely meaningful finding that needs to be addressed immediately since his p-value was so much smaller than the significance level he selected, which was 0.05.
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