A certain drug is used to treat asthma. In a clinical trial of the drug, 20 of 286 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 10% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. 1-PropZTest prop <0.1 2--1.695095535 p-0.0450286496 p-0.0699300699 n-286 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Right tailed test O Left-tailed test

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