1. In a clinical trial of a cholesterol drug, 373 subjects were given a placebo,
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Question
1. In a clinical trial of a cholesterol drug, 373 subjects were given a placebo, and 5% of them developed headaches. For such randomly selected groups of 373 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 ___
The value of p is___(Type an integer or a decimal.)
The value of q is___(Type an integer or a decimal.)
2.
Assume that the given procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean and standard deviation . Also, use the range rule of thumb to find the minimum usual value 2 and the maximum usual value +2.
In an analysis of preliminary test results from a gender - selection method, 24 babies are born and it is assumed that 50% of babies are girls, so n =24 and p=0.5.
The value of the mean is = ___(Simplify your answer.)
The value of the standard deviation is =___(Round to one decimal place as needed.)
The minimum usual value is 2 =___(Round to one decimal place as needed.)
please prove answer!!!
Explanation / Answer
1.n=373
p = 0.05
q = 1-p =0.95
mean = np =373*.05 = 18.65
standard deviation =(npq)^0.5 =(373*.05*0.95)^.5 = 4.21
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