Question

San Diego in your view were is found that one in five people approach will agree to take part in her survey on drug abuse and interview were approaches seven people at random find the probability the most to will agree to an interview

b ) San Diego interview has found that one in four people approach will take part on a survey on drug abuse an interviewer approaches eight people at random what is the mean and the standard deviation for the number of people that will participate in the survey

Answer 1

Solution @ X: Nem ber of people will agee an to terview ma Total member of qople = 7 proportion of geople who want gree = p = 1/3 Xu Binishini (m 37, p = 1/2 with am f, P[x-x] = "7! as per question, 7. (42) (1 - 137 2! (7-2)! interviews mow an P[most will will agree to =P[x3,4] = P[x=6) + P [x-6] + P [x=7] + P[x4] +0.0286 = 0.0049+ 0.00035 + 0.00001 in the list 8 (using 10.0333 X : Number of people that will participate Survey na total people = 8 pe proportion of people participatings to per question, Xu BINGHIAL (n=8, p = 4 ) as nolo mean - standard deviation 4 ។ amp 2844 - 2 people [ Ams ſuper-po 18 1 *3 = [102 [and] For Binomial lmp) mean = mp, stol. dev.= imperps}