A certain drug is used to treat asthma. In a clinical trial of the​ drug, of treated subjects experienced headaches​ (based on data from the​ manufacturer). The accompanying calculator display shows results from a test of the claim that less than ​% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a significance level to complete parts​ (a) through​ (e) below. ​1-PropZTest prop z p n a. Is the test​ two-tailed, left-tailed, or​ right-tailed? Right tailed test ​Left-tailed test Your answer is correct. ​Two-tailed test b. What is the test​ statistic? z 1.79 ​(Round to two decimal places as​ needed.) c. What is the​ P-value?