Homework SourseA certain drug is used to treat asthma In a clinical trial o
A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 290 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.
A. Is the test two tailed, left tailed, or right tailed ?
A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 290 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.
A. Is the test two tailed, left tailed, or right tailed ?
A. Is the test two tailed, left tailed, or right tailed ?
Solution
a)
The claim is that LESS THAN 10% of treated subjects experienced headaches.
Thus, by the words \"LESS THAN\", it is a LEFT TAILED TEST. [ANSWER]
