Question: Exercise 10.11 on artery disease in mummies indicated that 9 out of 16 mummies showed heart disease (hardening of the arteries). Test the hypothesis that

Exercise 10.11 on artery disease in mummies indicated that 9 out of 16 mummies showed heart disease (hardening of the arteries).
Test the hypothesis that the population proportion of mummies with hardening of the arteries is not the same as in the modern United States (that it is not 40%). Use a significance level of 0.05.

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