In a program designed to help patients stop smoking,

182

patients were given sustained care, and

84.1%

of them were no longer smoking after one month. Use a

0.10

significance level to test the claim that

80%

of patients stop smoking when given sustained care. Use the P-value method. Use the normal distribution as an approximation to the binomial distribution.

find the z value (test statistic)

find the p-value