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
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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) (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:
\ =\ {{n} \choose{k}}p^k(1-p)^{n-k})
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:
\ =\ \sum_{j=0}^k\,{{n} \choose{j}}p^j(1-p)^{n-j})
The standard deviation of the binomial distribution is given by:
})
John
My calculator said it, I believe it, that settles it
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