The benign mucosal cyst is the most common lesion of a pair of sinuses in the upper jawbone. In a random sample of 800 males, 35 people were observed to have a benign mucosal cyst.
a. Would it be appropriate to use a normal approximation in conducting a statistical test of the null hypothesis H0 : π ≥ .0.96 (the highest incidence in previous studies among males)? Explain.
b. Conduct a statistical test of the research hypothesis H0 : π < .0.96 Use α = .05.
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