A certain drug is used to treat asthma. In a clinical trial of the drug, 25 of 273 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 11% 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 <0.11 z0.972960 p-0.1652864C p-0.09157509 n-273 O Right tailed test O Left-tailed test b. What is the test statistic? (Round to two decimal places 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 it? Identify the null hypothesis. O A. Họ: p0.11 OB. Hoi p=0.11 OC. Hại p>0.11 O D. Hoi p«0.11 Decide whether to reject the null hypothesis. Choose the correct answer below. O A. Reject the null hypothesis because the P-value is less than or equal to the significance level, a. O B. Fail to reject the null hypothesis because the P-value is greater than the significance level, a. OC. Reject the null hypothesis because the P-value is greater than the significance level, a. OD. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. e. What is the final conclusion? O A. There is not sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches. O B. There is not sufficient evidence to support the claim that less than 11% of treated subjects experienced headaches. O c. There is sufficient evidence to warrant rejection of the claim that less than 11% of treated subiects experienced headaches.

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.