Compute probabilities of a sample proportion

Reference no: EM131116621

Compute Probabilities of a Sample Proportion

According to the National Center for Health Statistics, 15% of all Americans have hearing trouble.

(a) In a random sample of 120 Americans, what is the probability at most 12% have hearing trouble?

(b) Suppose that a random sample of 120 Americans who regularly listen to music using headphones results in 26 having hearing trouble. What might you conclude?

Reference no: EM131116621

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