Question

A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 261 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 co.1 p-0.1463370241 p 0.0804597701 n-261 a. Is the test two-tailed, left-tailed, or right-tailed? O Right tailed test O Left-tailed test O Two-tailed test b. What is the test statistic? (Round to two decimal places as needed) c. What is the P-value? P-value- Round to four decimal places as needed) d. What is the null hypothesis, and what do you conclude about i? Identify the null hypothesis OR Hop#01 n tn celect vour answer(s)

Answer 1

Solution :

from given information :

a.

• Left-Tailed test

b.

• z = -1.05

​​​​​​​c.

• p = 0.1463

​​​​​​​d.

Identify null hypothesis.

• A. Ho : p < 0.1

​​​​​​​

Part (e) not given in image but it may be related to reject or do not reject Ho

hence answer would be

• Fail to reject Ho / Do not reject Ho