You work for a pharmaceutical company that is testing a new cholesterol drug. Th

Question

You work for a pharmaceutical company that is testing a new cholesterol drug. The proportion of patients on the previous drug who had a positive treatment was 0.397. You want to see if the new drug is more effective than the previous drug. You conduct a sample of 79 patients on the new drug and find that 49 have had a positive treatment effect. The 99% confidence interval is ( 0.4796 , 0.7609 ). What is the best conclusion you can make of those listed below?

Question 8 options:

1) We can not conclude that the proportion of patients who see a positive treatment effect with the new drug differs from 0.397. 2) The confidence interval does not provide enough information to form a conclusion. 3) We can claim that the proportion of patients who see a positive treatment effect with the new drug is smaller than 0.397. 4) The proportion of patients on the new drug who saw a positive treatment effect from 0.397 is 99%. 5) We can claim that the proportion of patients who see a positive treatment effect with the new drug is larger than 0.397.

Explanation / Answer

THE PROPORTION OF PEOPLE POSITIVELY AFFECTED BY OLD DRUG = 0.397

WHERE AS THE PROPORTION OF POSITIVE TREATMENT BY NEW DRUG = 49/79 = 0.620

THE 99% INTERVAL OF NEW DRUG IS (0.4796,0.7609)

HENCE IT CAN BE EASILY CONCLUDED THAT THE POSITIVE EFFECT OF NEW DRUG IS HIGH THEN THE OLD DRUG. HENCE OPTION E IS CORRECT.

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