A certain drug is used to treat asthma. In a clinical trial of the​ drug, 25 of 254 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   z=−0.083660774   p=0.4666630728   p=0.0984251969   n=254       Question content area bottom Part 1 a. Is the test​ two-tailed, left-tailed, or​ right-tailed?   ​Two-tailed test   Right tailed test   ​Left-tailed test Your answer is correct. Part 2 b. What is the test​ statistic?   z=enter your response here ​(Round to two decimal places as​ needed.)

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A certain drug is used to treat asthma. In a clinical trial of the​ drug,
25
of
254
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
 
z=−0.083660774
 
p=0.4666630728
 
p=0.0984251969
 
n=254
 
 
 

Question content area bottom

Part 1
a. Is the test​ two-tailed, left-tailed, or​ right-tailed?
 
​Two-tailed test
 
Right tailed test
 
​Left-tailed test
Your answer is correct.
Part 2
b. What is the test​ statistic?
 
z=enter your response here
​(Round to two decimal places as​ needed.) 
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