SOLUTION: (a) It is noted that 8% of ART students are left handed. if 20 students are randomly selected, calculate the i. Probability that none of them are left-handed, ii. Probability

Algebra ->  Probability-and-statistics -> SOLUTION: (a) It is noted that 8% of ART students are left handed. if 20 students are randomly selected, calculate the i. Probability that none of them are left-handed, ii. Probability       Log On


   

Question 982270: (a) It is noted that 8% of ART students are left handed. if 20 students are randomly selected, calculate the
i. Probability that none of them are left-handed,
ii. Probability that at most 2 are left-handed,
iii. Standard deviation for the number of left-handed students



(B)if 50 classes of 20 students are randomly selected, what is the probability that 10 classes have no left-handed students?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The probability of k successes in n trials where the probability of success (p) on any given trial is found by:



where is the number of combinations of n things taken k at a time or

The cumulative probability of at most k successes in n trials where the probability of success (p) on any given trial is found by:



The standard deviation of the binomial distribution is given by:



John

My calculator said it, I believe it, that settles it