Suppose you work for a pharmaceutical company that is testing a new drug to treat ulcerative...

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Suppose you work for a pharmaceutical company that is testing anew drug to treat ulcerative colitis. You conduct a random sampleof 31 patients on the new drug and 10 of them indicated a decreasein symptoms since starting the drug regimen. You construct a 95%confidence interval for this proportion to be ( 0.158 , 0.4871 ).What is the correct interpretation of this confidence interval?

Question 9 options:

1)

We are 95% confident that the proportion of all patients on thedrug regimen that have experienced a reduction in symptoms isbetween 0.158 and 0.4871.

2)

We are 95% confident that the proportion of patients surveyedthat have experienced a reduction in symptoms is between 0.158 and0.4871.

3)

We are certain that 95% of patients will be between 0.158 and0.4871.

4)

We cannot determine the proper interpretation of thisinterval.

5)

We are 95% confident that the proportion of patients who shouldbe on this drug is between 0.158 and 0.4871.

Answer & Explanation Solved by verified expert
4.2 Ratings (792 Votes)
TRADITIONAL METHOD given that possible chances x10 sample sizen31 success rate p xn 03226 I sample proportion 03226 standard error Sqrt 0322606774 31 0084 II margin of error Z a2 standard error where Za2    See Answer
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