Suppose that the proportion of all American adults that fit the medical definition of being obese is 0.23. A large medical clinic would like to determine if the proportion of their patients that are obese is higher than that of all American adults. The clinic takes a simple random sample of 30 of their patients and finds that 9 patients in the sample are obese.
-Where is the distribution centered? Explain why this makes sense.
A) The distribution is centered around 7, since 23% of 30 is around 7.
B) The distribution is centered around 7, since 30% of 30 is around 7.
C) The distribution is centered around 0.23, since we are assuming the null hypothesis.
D) The distribution is centered around 0.30, since we are assuming the null hypothesis.

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The Answer of Suppose that the proportion of all American adults that fit the medical definition of being obese is 0.23. A large medical clinic would like to determine if the proportion of their patients that are obese is higher than that of all American adults. The clinic takes a simple random sample of 30 of their patients and finds that 9 patients in the sample are obese.
-Where is the distribution centered? Explain why this makes sense.
A) The distribution is centered around 7, since 23% of 30 is around 7.
B) The distribution is centered around 7, since 30% of 30 is around 7.
C) The distribution is centered around 0.23, since we are assuming the null hypothesis.
D) The distribution is centered around 0.30, since we are assuming the null hypothesis.

Suppose That the Proportion of All American Adults That Fit