Suppose you work for a pharmaceutical company that is testing a new drug to trea

Question

Suppose you work for a pharmaceutical company that is testing a new drug to treat ulcerative colitis. You conduct a random sample of 27 patients on the new drug and 9 of them indicated a decrease in symptoms since starting the drug regimen. You construct a 90% confidence interval for this proportion to be ( 0.1845 , 0.4821 ). What is the correct interpretation of this confidence interval?

1) We cannot determine the proper interpretation of this interval.

2) We are 90% confident that the proportion of all patients on the drug regimen that have experienced a reduction in symptoms is between 0.1845 and 0.4821.

3) We are certain that 90% of patients will be between 0.1845 and 0.4821.

4) We are 90% confident that the proportion of patients surveyed that have experienced a reduction in symptoms is between 0.1845 and 0.4821.

5) We are 90% confident that the proportion of patients who should be on this drug is between 0.1845 and 0.4821.

Explanation / Answer

Option - 2 is the correct answer.

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