In a clinical trial of a cholesterol drug 341 subjects were

In a clinical trial of a cholesterol drug, 341 subjects were given a placebo, and 11% of them developed headaches. For such randomly selected groups of 341 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. what is the value of n

Solution

n = 341

p = 0.11

q = 1 - 0.11 = 0.89

mean = 0.11 * 341 = 37.51

SD = srqt(0.11*0.89*341) = 5.78