SOLUTION: <pre><font face = "Tohoma" size = 4 color = "indigo"><b> Hi from a random sample of 35 patients, estimate the probability that at least 17 test negative.

Algebra ->  Probability-and-statistics -> SOLUTION: <pre><font face = "Tohoma" size = 4 color = "indigo"><b> Hi from a random sample of 35 patients, estimate the probability that at least 17 test negative.      Log On


   

Question 430253: 
 

Hi

 from a random sample of 35 patients, estimate the probability that 

at least 17 test negative. 

Answer by ewatrrr(24785) About Me  (Show Source): 

You can put this solution on YOUR website!
   
 

Hi

Survey Results reveal that 45% of patients screened for a virus test positive

 p = .45  q = .55 

random sample of 35 patients

P(at least 17 test negative)= .8251

mean = .55*35 = 19 expected average number to test negative..

SD = sqrt(35*.55*.45) = ~3

P(at least 16 test negative) = .84 for example  

z > -1 (everything to the right of that)

so...P(at least 17 test negative) would be estimated to be somewhat < than 84%.