1-PropZTest
	propless than<0.090.09
	zequals=0.4212778690.421277869
	pequals=0.66322390560.6632239056
	ModifyingAbove p with caretpequals=0.09737827720.0973782772
	nequals=267267

A certain drug is used to treat asthma. In a clinical trial of the drug,2626of 267267treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 99%of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.050.05significance level to complete parts (a) through (e) below.

a. Is the test two-tailed, left-tailed, or right-tailed? Left-tailed test Right tailed test Two-tailed test