Question

In a clinical trial of a cholesterol drug, 374 subjects were given a placebo, and 21% of them developed headaches. For such randomly selected groups of 374 subjects given a placebo, identify the values of n, p, and q that would be used for finding the mean and standard deviation for the number of subjects who develop headaches. The value of n is __________. (Do not round.) The value of p is __________. (Type an integer or a decimal. Do not round.) The value of q is __________. (Type an integer or a decimal. Do not round.)

Answer 1

Answer: The value of n is 374. The value of p is 0.21. The value of q is 0.79.

Explanation:

Given : In a clinical trial of a cholesterol drug, 374 subjects were given a placebo, and 21% of them developed headaches.

∴ Sample size :
`n=374`

The probability that cholesterol drug developed headaches :
`p=0.21`

Then , the probability that cholesterol drug did not develop headaches :
`q=1-p=1-0.21=0.79`

Hence, The value of n is 374.

The value of p is 0.21.

The value of q is 0.79.