A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 2

Question

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 ?

Explanation / Answer

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]

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.